Domino’s Pizza complaint: Dominos charged for Pizza wrongly

Hi Domino’s team,
From last 6 months, almost every week, I order pizza on Domino’s website with deal $6.99 each pizza for 2 pizzas and every time I get charged with $15 which is expected. On 115, Domino’s charged me $36.36 which is totally wrong. After 3-4 days I realized it and I felt this is a technical error and Domino’s will open to accept their mistake and fix it. I raised so many complaints via Domnio’s websites (case numbers 6201426 and 6211763 and 6209431) but Domino’s is so much egoistic, they don’t want to understand customer complaints or frustration with Domino’s behavior. I spent so much time to explain to them that they made a technical mistake and charged the customer an additional amount. I called so many times on Domino’s customer care also 734-930-3030. I also asked them to call me if they need any additional evidence and clartification. No customer worry for $20 -$25 but the way Domino’s treating customer is so much painful and frustrating.