dstv bad service

Good day ...my name is Carmen Otto......my decorder was disconected after an agent call me and told me I've got credit on the account ***0. Monday there was no picture and I've send dstv a message how much I need to pay.....they said r278.14 .....50-reconnection......68.94 overdue what no one could explain to me.....159.20 subscription fee...ade payment of 250 and ask to downgrade to easy view...suddenly the amounts that was given to me in the first place was not right and after 3 calls wit 3 diffrent agents they assured me everything will be sorted yesterday beforde the end of day...this morning still no picture and all dstv say is we working on it ...someone help me please cause I mean this is happening evry month ...I pay and pay and all they want is more ..after I've made payment of 250 they send me this We experiencing a technical problem with the downgrading of the actual package to DStv Easyview. We have escalated the error to our support team and will feedback as soonest. However there is an additional payment that needs to be made on the account. I don't know why every month I need to pay more than usual