Incorrect Deductions

I have been having problems with the company since last year December. they have deducted incorrect amounts from my account which resulted to extra expenses on my side. I have used over R1500 trying to contact them. Last week I made an arrangement with them to deduct an amount of R248 from my account it was an amount outstanding because again they had made an error on their side instead of deducting the agreed amount they deducted R829 which resulted to a unsuccessful payment and extra charges on my bank account. I called in again they put me on hold for 20min and they hung up on me I called in again to get another call centre agent who also put the phone down without assisting me. Multichoice claims that the calls are recorded but seemingly nothing has been done to assist me. They have admitted that it was their fault that they have been deducting incorrectly but still they have not attempted to assist me instead they just keep disconnecting and wasting my time and money. I have decided to discontinue using multichoice as a service provider because they keep exploiting me because I am just a non entity to the who need their services.