INCORRECT BILLING OF ACCOUNT - DATA ISSUES AUGUST & SEPTEMBER 2017

I have been a client of VODACOM since 1995 and I have 8 contracts on my name, my account number is QC153062-6 and never had issues since the data issue during August 2017 on my one account ********** (3GB BB 24 MONTH TOP UP) I was invoiced in September the amount of R1,718.30 vat incl and October R3,728.79 also vat incl. I did never use even 2GB of data. VODACOM issued 2 "courtesy credits" one for August usage R1,448.01 and one for September R3,142.24. This issue had nothing to do with courtesy credits as I did not use the data and therefore have to be 100% refunded. I numerously called VODACOM customer care but the staff had no ability to resolve this issue and they are pestering me with calls etc about the arrears and call everyone on my profile, this is utterly humiliating and needs to be resolved asap I don't know who to contact anymore as the call center agents do not want to put me through to someone who can resolve my issues. ALSO on my son's number ********** 13 I always paid the amount of R258,50 pm why did it increase in October to R358.50? In April 2017 a number was added to my account 064 683 572 I paid it was never refunded. On my Ex-husbands number ********** is was charged and addition R11 this month why? Please I need this resolved asap.