Unhappy customer due to pathetic service received.

I have been using multi choice for the past 13 years, always been on compact package paying my account via debit. They have recently upgraded my premium from compact to premium without my knowledge, also activated my old decoder that i was using before upgraded which left me owing about R2300, when i call them to enquire they refuse to reverse it and end up suspending my account. I have been calling for the past 3 weeks talking to different agents with no assistance, they said the manager will contact me till today this happen on the 20the of June. Honestly i am so disappointed in multichoice, the agents they don't listen to customer complaints, when i explain the argue and insist that there is no way this can happen even refuse to call the manager because its over the phone they simmer cut the call. What kind of service is this, where by the agent can do whatever they want with the clients without the mamager intervining. If there was 0 i was gonna rate them 0, cos wow. Disgusting service