Incapacity to provide proper billing services

After multiple attempts to change over account ownership from my father to myself, my Vodacom account was finally put into my name in November 2017. After this happened my father was still debited with my account in the beginning of December for the service provided in November. This was not a problem as my own bank account was not debited yet and so all that was needed was for me to pay my father back. However on the 1st of January my account was double debited for both November and December even though my father had already paid my account for November. Unfortunately due to changing bank accounts from Standard Bank to FNB (Who told me they would sort out debit order switching for me and clearly didn't), my Standard Bank account had insufficient funds in it and the amount bounced. I then decided to go to my nearest Vodacom store (Mall of the South) to resolve the issue - along with other recurring problems - and once I had spoken to a consultant from the Accounts Department (Extremely bad attitude and service to say the least) I was informed to then pay the full amount and my account would be credited for the next month meaning that I wouldn't have to pay for the next month. Now I have received an email from Vodacom stating that my account is in arrears for 3 months now and the problem has clearly not been solved.