Coast Dental Services review: Teeth cleaning

I went in and had my teeth cleaned January 5th, 2023. I was charge 645.00 just to get my teeth cleaned. When I asked the hygienist why I was being charge so much she assured me I was getting the coast dental price. I ended up paying but reached out to the billing department as soon as got home and was told the price was so high because I had my teeth deep cleaned. That was lie but it still wouldn’t explain the high price. My hygienists behavior was unethical if not illegal. The office backed her instead of investigating the situation. I’m not even interested in a refund I want to make sure that particular hygienist isn’t allowed to abused her authority and take advantage of patients.