Incorrect Billing!!!

My services was suspended even though DSTV debits my account EVERY month with the correct amount. I am now being told I owe this ridiculous amount. How is that possible if my account gets debited every month for years now!!! I want this issue resolved or I will cancel my DSTV. Ever since then my account has been debited every month and I have no arrears I have phoned DSTV multiple times since 2 September 2019 and no one is able to assist me. I would like my service restored!!! My Case Reference Number is: ***