My son got braces in September of 2017 we got behind on the bill and the office refused to administer any kind of care for 9 months. I called the Preston Agency and paid the account in full getting a receipt that has my account number and balance paid in full on the attachment. He has been seen 3 times since that time once a month every month. I received a call today on 06/28/2018 saying I still owe them $1900 and wont be able to receive care from the office once more. This is after the bill was paid receipt was sent out to me and no correspondence has come through collections or the office in the form of an email bill or paper bill.