Dstv poor customer service

Dstv customer worse customer expirensced in SA. I have called more then 20 times and the line keep on disconnecting managers fail to call me back after they have promised that my escealtion has been dealt with. I have went Instore and dunzaane green escelated my matter with ref *** and was told that my payment has been recvied sent back to the back office they will allocate my missing payment and added to the account. This has been ongoing i optd into a promotion which allowed me to stream for three months at the price of 520 however I had to pay the full amount to stream of 830 plus my 570 that was not Allocated. Dstv is losing customers and this is definitely not the way to treat customer to retain what you have I want feedback ASAP please.