Refund Due

I am writing this as I am so unhappy with Discovery. I requested a refund for a medical expense that I recently paid out-of-pocket. The details of the claim are as follows: Reason for Refund: Dentist has claimed what was paid for. I have called in on numerous occupations sent many emails with no help and today is day 5 with no refund. I sent the relevant documents, including the receipt, detailed invoice, and proof of payment, to support my request. And still nothing every time I call I get told you will received your money but NOTHHING. Shame