Incorrect Billing and continual disconnection

In August 2015 I requested my subscription cancelled as from the 31/08/2015. A debit order of R779.00 still went off on the 26th of August 2015 and the agent assured me that my credit will be lying on the account. Costs deducted for the last few days of August 2015 =R77.90. On 7/11/2015 I went into the Tableview offices and had it reconnected. The credit balance of R701.10 was still available. We only called in on the 15/11/2015 to have it connected as it was only from then that we used it, because the gentleman did not switch it on on the 7th of November when we went in.Regardless,from 7/11/2015 till 30/11/2015 = 24 days = R603.10 due, leaving me with a credit balance of R98.00. 1st to 31st Dec = due R779 paid 3/12/2015. 1st Jan to 31 Jan 2016 = due R779 paid 04/01/2016. These amounts were allocated to Box Office for some reason. These amounts were transferred minus an outstanding balance of R120 on Box Office and therefore I owe R22 on the residential portion. I have now being disconnected 3 times in 10 days. I have been told that I owe R345.00 and then again R560.00. None of this makes sense. Please can someone resolve this as I cannot hold on for hours everytime.