Incorrect billing number suspended

I upgraded my number in January 2016. On my invoice I noticed that I am being charged double for old and new update. I logged in a fault on the 7 March 2016, I was promised that this will be rectified and up to date it is not attended. In April I reversed the debit and paid the correct amount, My number has been suspended because I did not pay the amount from my previous contract that I am being wrongly billed. I called again on 19 April 2016, I was told that nothing has been done about my complaint after a period of more than a month. I hope my request will be attended so that my number can be activated. I am still waiting, Telkom Ref: ***9