After you file

I filed an amended tax return for 2020.  The IRS shows they received it on 11-9-2021.  I have been checking the status online.  Yesterday I checked as normal only to see a take action message to call the phone number [phone number removed] ext 623.  I called six times yesterday, but no one was available and my call was ended.  I tried this morning at 7:13am as they don't open till 7:00am.  Got the same message, too high call volume, try back or check online, hung up on.  Really? 13 minutes after they open?  I am assuming that is the standard line since they are so far behind processing from 2020 and now they have new returns for 2021 coming in.  I am also assuming I got the notice because it is taking so long to process, but how do I know unless I can talk to a real person?  What is so frustrating is because of the message I  can no longer check the status of my amended return online.  Which was their recommendation!  Talk about a catch-22.  Do I keep beating my head against the wall trying to call them over and over again or just wait?