Western Dental Services review: refund/ billing

My husband and I were charged in April for over $550 for a procedure he was going to do in May. Due to my husbands other health issues we did put the procedure (wisdom teeth) to a hold. We contacted Western Dental and they were to refund us. But instead we began receiving bills for services they never did demanding the remainder of the money. After months of back and forth they finally said they would reimburse. I told them I no longer had the credit card used, and asked if they could send a check, which of course they would not. So I gave them a new credit card #. It has been over 2 weeks and I have still not seen a penny. Western Dental are CROOKS! It is now the end of November! They charged me in April, not to mention tried to put us in collections for something they didn't do! I want my money back immediately and everytime we call them we are put on hold, the call drops, or they tell us that they are looking into it!