DISPUTE - THERE IS NOTHING TO DISPUTE !

On Wednesday the 1 st April I called telkom to downgrade the office internet service to a new package -ref no was given as they say call recorded etc/ thinking everything was sorted i was happy.the following month received a heavy account and assumed they bill in arrears and charges were there for the service request.June month another heavy account!!! this time i called to query they explained the request was on system but technical error so they adjusted the error and advised i must dispute the account charges for 2 months as it was a technical error on their side. I layed a dispute for the account and was told 10 work days to follow up!i followed up and was told it was discarded?- it shouldn't even be a dispute!!! it was telkoms error and we are being charged for that for the last 2 months - i kicked up a fuss then they told me i will get a call back from a manager -lol- i am still waiting and i called on the 24/6/2015!!! and i bet you this month i will get another account that i will have to pay even though i should be in credit! what pathetic service - how do u even manage to run a business this way ? its like *****ing from people ....