Overcharging, No statement, disconnection

Despite numerous telecoms, a visit to the durban branch. No one can explain why the monthly debit order exceeds the maximum service package premium. Despite every request for a statement to be provided same is never sent although I receive a monthly newsletter. After my visit to the branch 24/11/2015 where payment of R425 was made as the total required payment. Services have been cut twice to date stating account in arrears of a further R397. The service is shocking, how can a business deduct monthly debit orders in excess of what the service provideds premium is and refuse or decline to send monthly statements and still cut the service at random intervals.