Telkoms bad service

Goodday, today I recieved a sms from a debtcollector stating that Telkom handed me over to them. On a previous occation on November 2018 I also reported Telkom . Telkom phone me back and clear the balance on my account and the lady said that Telkom will with imediate affect switch my line back to prepaid as it is use to be. It was changed because of a fold on Telkoms side. Im still waiting for them to correct it. As up to now I did not use my Telkom phone at all because of that. I did try to contact them several times without sucess. I need this to be sorted out asap.