Bad service

Multi choice sold me an upgrade in December for price lock of R849.00over 2 years but to my surprise I was debited R2450.00 and I called the call centre which I was promised that it's fixed and I should reverse the funds and pay the correct amount manually. I checked on DStv Watts app and looked okay up until yesterday when they suspended my account and said I owe over R2 K again and this lady from the call centre failed dismally to help and understand my query. I asked for a manager she said there no managers only team leaders even them were busy .I feel the service was pathetic as I have been dealing with this query for 2weeks and I am frustrated still can't get help nobody cares.