1 Week dispute not yet resolved after 1 month!

Good day. In June 2015 I received an account of over R 2000 which is WAY OVER my usual bill (for over how many years). I phoned Telkom over and over again and could not get through. Eventually on the 13th of July I got hold of Lizelle and explained the situation. She said that someone requested an ADSL upgrade on my line (this cannot be, I don't know anything about internet, I'm a pensioner). She put me through to Rickie who said he will cancel it and provide me with a credit (Ref rickie***). I even received an sms stating it has been cancelled. I phoned again on 20 July to check that all is in order and they said they are still waiting for the dispute to finalize. Apparently the dispute takes 1 week to finalize, it's now been 3 weeks - STILL not finalized! My July bill arrived and surprise surprise my bill is R 764.92 - THIS CANNOT BE!!! When will this be dealt with? You seem to be extremely useless! Perhaps I must close my account and move my money to Neotel.