Waiting on IRS to acknowledge my dispute of notice CP11, cannot get ahold of anyone, payment extension expiring.

I posted on another subreddit back in May after I sent in all the dispute paperwork.

As of today, the IRS Transcript gives no indication that they have recieved this or processed it.

I had put in a 6 month payment extension request with the expectation that they would have processed my paperwork ( delivered March 21st ) by now.

Does anyone know what it should be expecting to happen from here?

Should I go ahead and pay the outstanding balance now, and expect to try to collect next tax season? Or can anyone give me any other advice?

Thanks in advance.

Previous post for reference https://www.reddit.com/r/tax/s/Yw8M3SMPcB