Bad Service Customer Care and accounts

I have a continual problem with customer service and accounts department. They continually try to debit my account with large amounts of so called arrears Obviously these debits are returned. I then pay EFT. My account is nit in arrears. I pay them every month but they just do not fix my account even though I have sent the customer service centre my bank statement on numerous occasions. They just do not fix it and every month they try to debit my account with a larger amount. I then pay EF and every month I send them proof of payment. Every month for the past four m9nths months they cut me off!! Even though i pay them each month and this time my DSTV has been off for the weekend since Thursday and the customer service centre seems to just ignore it and do not put my service back on.