Great Expressions Dental Centers review: refund

My husband went in for a cleaning on 1/23/19. When he was finished he was told he had to pay $88. NEVER in the time we had this insurance we had to pay for anything. Long story short I called my insurance company and they told me that we only had to pay $30 out of pocket and contacted this office and this office could not tell us why they charged us $58. The manager here is a horrible person to her customers. She yells and doesn't let the other person to talk. I want this so called manager to call and apologize for her actions. No manager should talk to their patients the way she did and I want my money back ASAP!