OVER CHARGED ACCOUNT

I upgraded my contract 4 months ago to a 10GB top-up account. <br> <br> Last month I was debited R6700 and when this was queried on the 01st of October, the call centre person confirmed that this was an error and it will be corrected, as someone will contact me within 48 hours.<br> <br> 8 days later, I phoned again to find out why no one has contacted me, I was told that my new account is now R8000, (how can a normal household use more than a R1000 per day? My average account per month has always been R650+_ pm<br> <br> No one is taking responsibility and all they say is that I have to pay???? I have requested to speak to the manager, but the call centre person keeps losing the call.<br> <br> Terrible companY!!