UHC keeps changing my PCP

Hi so this may be a weird niche problem but every UHC rep I've talked to on the phone has no answers or knowledge about what I'm even asking, let alone solutions.

I have an HMO with UHC through my employer in the southeast US.

When I first signed up for benefits they make you choose a PCP with very little info to register. I chose one and it turned out that office was not actually taking new patients despite UHC website claiming they were.

So I found another practice and went through the arduous phone process to change my pcp and get care. The next time I needed an appointment though, my PCP was changed back to that original group I selected when I registered(through no action of my own whatsoever), so I had to update my PCP again (thought the app this time) and wait until the start of the next month for my appointment.

Both times I have talked to the customer service reps they have no idea why it happened and have offered no solutions.

Now, I need to get medications refilled and I checked my online member card to ensure it still matches my printed one with my updated pcp and, guess what, it's back to that original group that I have never been to or seen or selected since registering for benefits.

I have checked the employee resource/basically HR app to see if it's somehow in there and United is checking it periodically and updating but there's nothing there.

I want to change my PCP anyway to a new doctor because the one I've been seeing is way too busy and also incredibly unhelpful about most things(although-par for the course of most of the medical establishment it seems).