I agree that SmileCare in Concord, California is horrible! My son got braces there, and I only went to them because of my insurance. The office manager told me that I had to get financing for the copay, and I was able to get part of it through CareCredit (also has bad customer service). She told me to try another company for the rest of it, but I told her that I was re-establishing my credit after a divorce and didn't want to run another credit check. She assured me that they approved people easily, but they didn't approve me. She didn't apologize or say one word, other than filling out their in-house credit form that I hadn't even been told about. I couldn't believe she didn't tell me that they could do the financing, especially when I told her my situation. They couldn't care less about their customers.
I also got a letter from them saying they were going to remove my son's braces, because I had not been "cooperative" in keeping appointments. My son had never missed an appointment, or even been late. The letter was so rude, and it was obviously a form letter. I was so insulted, because the only reason they sent it was because he needed to make appointments every month. I didn't realize that, and they waited two months before they sent the letter. How about calling the customer, huh? I pay for his braces every month, whether he sees a dentist or not, so why treat me this way?
Bottom line, DO NOT USE this dentist if you can help it.