CPAP vendor issue resolved.
Whew!
3 months of this crap, but it's finally resolved.
I ordered through Aeroflow Sleep in Arden, NC. Very nice folks IF you do their job for them, which I did repeatedly. They have all 5 star ratings on Google, which is why I called them to begin with.
Hopefully, the machine will arrive & work like a charm so I can feel better.
Ty to all who replied! 
= new reply since forum marked as read
I had a bit of a cluster fuck because I didn't have a virtual or face-to-face doc appt. I sent doc 2 messages through the patient portal requesting a sleep study.
But the doc did not listen & order the WatchPat One I had requested. He ordered a "ring" from Blackstone Medical. Never heard of this company, but it instantly set my hackles on end. I think it reminded me of Eric Prince's mercenaries.
Anyway, a quick google revealed a score of "F" with the BBB & hundreds of unresolved complaints.
Back to the portal to direct doc AGAIN to do whst I had originally requested. So I asked him to order from Itamar, mfr of device I'd requested. They never contacted me, returned my voice mails or emails. He sent rx there on Oct 4!
So fuck it. I started hunting & found a nice article published by the Coumcil on Aging about The Sleep Doctor. So off I went, met with a doc, got an rx, received & completed the test & had another appt. Sadly, they do not accept Medicare assignment for eqpt. & the 3rd party vendor they use does not serve the 3rd world of TN.
Off to hunt for a vendor...
What a nightmare. But I'm glad it's all resolved.
WTH is wrong with this country? And I have standard Medicare and the old fashioned gap plan that covers absolutely everything. 
I hope you are doing well.
And in the meantime, all my organs continue to degrade because of their ineptness. But I'm just glad it's resolved.