Pathetic accounts department and no service

Every year we get an invoice round about the 18th February requesting that we pay our annual subscription by 16th March. This year we received nothing. When I downloaded the statement from the website, the statement should nothing due, yet if you look at the balance page on the website, a balance of R8569 was reflecting as payable. I phoned DSTV and they said that they moved over to a new accounting system and therefore the statement processing has changed. I said that was unacceptable as I needed to pay the account but I had no tax invoice showing anything due. I paid the account without an invoice/statement. To date I am still waiting for a statement/invoice. I know noticed based on the website transaction history that DSTV is now charging me on a monthly basis for March and April and my account is sitting in credit. My account is no longer reflecting as an annual account. I phoned DSTV and spoke to Fortunate who said she was putting through the journal and would contact me telephonically once the financial department approved the journal correction. I am still waiting for the callback Fortunate. Today I looked and still see that I am charged monthly and that R2 338 is due by 17/05/2016, yet my account has been overpaid by R6946. I also don't even have a breakdown of what makes up the R2 338 as the statements available on the website just shows my payment of R8569.01. What happened to being billed on an annual basis as we have been for over 10 years already. I did not request to be billed monthly. Pathetic accounting system and *********** staff. How do you migrate to a new billing system that doesn't work and that clearly was not tested before being implemented. The previous billing system worked without failure for over 10 years with no problems. Next time consult with your auditors before implementing an ineffective and problematic billing system.