Thank you for the response, Anthony!

I'm grateful for your fast answer and Opabinia's as well. It's good news, you received these letters, as there was a letter before that has never been confirmed or answered. This made it necessary to ask for a confirmation / acknowledgement. The timing of a detailed answer is at your discretion. If that takes a month, one needs to know if the letter was received at all.

Thank you for informing me that ArbCom is not taking this case until I'm unblocked. This is a catch-22, as the debated WP:INVOLVED admin action is the block itself. To my best knowledge this block is not a form of a ban from resolving the issue with the block itself, therefore I see it as a technical barrier at the moment, that can be lifted by any administrator or the Committee.

To my best knowledge a block can be reversed "(in very rare cases) on appeal to the Arbitration Committee." As there is information that cannot be shared in the unblock request, I kindly ask the Committee to consider this route. Alternatively, as members of ArbCom (only inactive members?) in administrator role can review the unblock, that would be appreciated, as that would save time for us all.

Regarding the unblock: it's been 4 days without response. The block itself took 1 and 22 hours after the 2 accusations, respectively. The previous block took 4 hours. If the intent is there, events unfold quickly. Having seen the responses to a legit unblock request before, I would be most surprised to get a positive response from an unknown admin. I trust the members judgement and intent to resolve this issue.

Regarding the block: It's still unclear to me exactly which edits I made are disruptive in the blocking admin's view. I understand an administrator is "expected to respond promptly and civilly" to a question regarding admin actions, but as I see from his previous reverts on my TP and TPA removal, he might see such question as disruptive, and remove TPA again. I'd like to ask the members' advice whether to and how to present such question. Suggestions for exact wording would be appreciated.

Regarding the case: As I understand, you suggest to take this case to ANI once I'm unblocked. Admin conduct cases at ANI are - at best - continued at ArbCom, but usually end in a boomerang instead. Seeing that Bbb is one of the most active and influential administrators on ANI, this would cause only unnecessary drama and disruption, which is not my intent. As required by WP:ADMINABUSE, I have already contacted administrators. It's up to them to make a public note on this, but to take action would be highly unusual. Resolution for this case is unlikely outside ArbCom. Please inform me if the ArbCom decision is changed at any time.

As usual, please confirm receiving this letter within one day, and answer it at your discretion at the time most appropriate for you, thank you. I understand these are busy days on enwiki.

Yours sincerely,
Aron Manning

On Tue, 25 Jun 2019 at 19:16, Anthony wrote:
Dear Aron,
We got your email and I can't see that we've ever failed to receive an email from you.  We are a committee of volunteers and as such I must ask you not to expect or request answers in any less than around a month from emailing.
The committee does not hear "ADMINACCT" complaints except if you have already exhausted the methods set down at WP:ADMIN for challenging non-compliance by an administrator.  Most complaints are resolved without the committee being involved.  I see that you have only raised the issue with the administrator themselves but not with any other administrators, which would be the next step.  For the time being, I do not think we are prepared to consider your complaint.  Note that you are not able to edit Wikipedia while you are blocked.  All ADMINACCT recourse is closed off to you unless you successfully appeal your block.
I note my colleague Opabinia has separately responded to the other matter you raised (of your block).
Anthony (AGK)

On Tue, Jun 25, 2019 at 12:57, Aron Manning wrote:
Dear  Arbitration Committee,
There was no confirmation of this letter - maybe it got caught in a spam filter -, therefore I'm resubmitting it. Please confirm receiving it within one day, thank you!

On Sun, 23 Jun 2019 at 19:29, Aron Manning wrote:
Thank you for your reply, Opabinia!
As usual, please confirm receiving this response, even if an answer takes more than a day.
As you suggest, I will continue to wait for a reply to the unblock request, which I expect will take a long time, and result in a refusal or further barriers. As a comparison: the block happened 1 hour after the 2nd accusation, 22 hours after the first accusation. One would expect such a mistake is corrected in comparable time, but until then there's nothing else I can do there. Although I'd like to ask the blocking admin per wp:adminacct exactly what diffs are the "disruptive edits", similar questions before were unanswered by Bbb, thus it would be of little use, and it would risk him blocking TPA again.
In the meantime, I'd like to proceed with the admin accountability aspect of this block with ArbCom. I don't expect the hostilities to end, even if i'm unblocked, and the issue I raised is more than just one user blocked with involvement: quite a few cases at Administrator's Noticeboard shows Bbb's conduct and civility as admin raises questions. Further than that, there seems to be a repetitive pattern of new editors receiving swift indef blocks. In many of these cases the editors are clearly unaware of the myriad of rules, and a civil explanation ("counseling" as Bbb refers to it) would help them make proper edits. Such conduct adds to the public's impression of hostilities towards new WP editors, undermining WP's image, therefore I wish to proceed with this report as an ArbCom case.
Please inform me, whether ArbCom accepts to investigate this breach of administrator accountability at this time, thank you!

Yours sincerely,
Aron Manning
On Sun, 23 Jun 2019 at 11:44, Opabinia regalis wrote:
Hi Aron, we've received your message, thanks. It looks like you have an open unblock request on-wiki right now, which is where appeals not based on private information would typically be handled, so on first look I'd encourage you to continue with that process.

On Sat, 22 Jun 2019 at 09:51, Aron Manning wrote:
Dear SilkTork, and Arbitration Committee,
Please confirm receiving this letter, even before answering it's content, thank you.
The following forwarded letter was sent 2 days ago, with similar request. It seems it was lost in transit, therefore it's sent again:

---------- Forwarded message ---------
From: Aron Manning
Date: Thu, 20 Jun 2019 at 10:56
Subject: Conflict with an admin and indef block
To: arbcom-en (at) wikimedia (dot) org

Dear SilkTork, and Arbitration Committee,

Recently an admin, who had a conflict with me before, blocked me indefinitely without a warning, or community consensus. 
We had some discussions previously, where I had an unwelcoming impression. Later - after an AN/EW case - I've voiced my concerns about his neutrality in the case and his civility:
I was just looking for a neutral reviewer. You could have been that, that would have saved a lot of time for me and you. Speaking honestly is a form of respect, thus I write this with respect to you: we did not speak the same language in our last discussion, nor in this one, thus I do not intend to "disturb" you in the future: feel free to ignore my posts.”
After that he ensured me: “I don't see you lasting very long.” ... “I'm monitoring your edits and intend to do so at least for a while.”

A few days ago 2 editors accused me on my talk page of bludgeoning, and a 3rd with personal attacks. We are in a "heated" MRV dispute, these 3 editors are on the opposing, majority "side", they opposed my comments initially with the claims of "bludgeoning".
My edits - however numerous - are discussing policies with citations, not disrupting. The affected page is an "internal" project page, yet it was the basis for an indef block, the equivalent of blatantly vandalizing a public article.
I believe this was unjustified, and a result of our previous "history" with said admin.

I believe Bbb23 gives great service to the community, especially with SPI, but as a new user I had negative experiences with him.

He was unwelcoming when I asked his advice how to handle sock/meatpuppets targetting my edits, and made an uncivil remark.
"You might want to take a look at the garbage Aron created in the list." --Bbb23 (talk) 00:15, 14 May 2019 (UTC)  That SPI resulted in a warning to an editor, even without his help.

In the previous EW case he declined my unblock request, then ignored the second request. 
The evidence was clear: I left the edit war 10 hours before the block, and made an ANI report, not intending to continue EW. "Blocks are used to prevent damage [...] not to punish users", per WP:BLOCK. It seemed to me that even clear evidence was not satisfactory. 
Later he revoked my tpa, despite the consensus of a previous case.
He also closed the ANI report and another ANEW report without reviewing those, practically ignoring the evidence that the 2 users editwarring me started it and didn't stop doing it.

Recently he reverted my talk page when I added the refutal of the accusations, calling it disruptive. If I were to post this unblock request on the talk page, I expect an accusation of personal attack or disruptive content, and repeated revokation of tpa, therefore I'm unwilling to post it there.
For this reason I ask the help of the ArbCom. At the moment email is the only means to make this request.

Please confirm receiving this letter, thank you!

Yours sincerely,
Aron Manning