POTS Dr Recs

I am looking for a Dr., in the Marietta, Kennesaw area or within a 30 mins drive, to test and diagnose POTS. I have had symptoms for a few years now but recently it's gotten worse and it's time to see a Dr. I've called 20 Drs I found on Google and they either don't treat POTS or they have a 1.5 year waiting list. HELP I need amazing Dr. recs.