June/July bills R8200.00 in excess of normal

I am the holder of 3 MTN numbers under my account A***. My normal billing amount is R486 per month for the 3 and this has been consistent for the past 2 years. At the end of June 2015 I billed R7359.45 in excess of the norm and in July again R942.31. I complained to the Nelspruit ABSA Square branch who said they could not assist with billing matters and referred me to Customer Services. Emails followed to them (June *** and July ***) as well as SMS inquiries but there has been absolutely no response.<br> <br> I cannot afford the amounts charged and have made every reasonable attempt to resolve the incorrect billing. I am a pensioner and there is no way I could have spent the amounts charged. Required a response from MTN and the accounts to credited with the overcharged amounts.