32 weeks and want a new OB

So I had my 32 weeks appointment today. I waited for over an hour to be seen. The front desk ended up going to lunch and told me that my OB would be with me after they got off their lunch. I said well why would you schedule my appointment at this time if it’s when they normally go to lunch. The receptionist rolled her eyes at me and closed the window. So I ended up leaving. An hour later they called me telling my that I still owed them a co-pay for today since I cancelled my appointment.... I drive 30 minutes out to this office because it’s the closest one to me. They treat me like shit and my OB never listens to me. How hard is it to find a new OB this far into my pregnancy?