exorbitant billing

My MTN line was blocked some two months ago for arrears to the sum of about R8000. I've neither used my phone on roaming nor made international calls, neither have I had the time to use that amount of data. I queried this bill after the mother long MTN call centre strike and received no joy. I demanded to be sent a listing of all sites i visited and calls made that might have accumulated to such an amount and to date and after much badgering, I'm still waiting and still without an open MTN line. I'm revolted by this ****************. *****ing from honest and innocent people!