Over billed Again.Terrible service

Last month my service was suspended and i was not notified off my bill as i was not reciving my bill via email.i had call telkom to be told i needed to pay an additional amount.so i had told the consultant that how come telkom not inform me either by sms or a call that my service was going to be suspened.never the less i went and payed the amount due and was reconnected.This month again telkom now sends me a bill for double my my montly Subs.I am on a R799 month to month contract but i am being charged R1800.I call the call center again to equire and the agent told me that she dont under stand why im being charge double when the system shows im on a R799 pacakge.Its goin on a week now and my bill is not rectified.Telkom has charged me double my subs and even added on a R250 reconnection fee even tho i call the call center and advised them the issues.please could i have some assitance as telkom service levels as realy effected my budget as i didnt plan to be over billed.My bill has always been paid on time and my adsl is in daily use.PLEASE HELP