Not from that area but did visit a few times. I have used Ron Andrews Medical.https://www.ronandrewsmedical.com/ they delivered to a hotel and picked up for me with a copy of my script email to them. No issues at all and I think it was something like 25 bucks a tank. I would call your PCP and ask them to write you a script for the oxygen, it does not need to be a neuro. It may be faster and they can send that over to get your tanks faster.
Make calls and demand it, don't take no for an answer and you can get it done today if your motivated enough.