Getting the runaround for weeks

I am incredibly frustrated. I made the terrible mistake of trying to upgrade my ADSL, and now have had no internet service since 1 August 2017. I have made repeated calls and get told a different story every time about whether there is a pending upgrade, whether my old TIN is still active or not, etc. I get bounced between Sales and Technical and Accounts, and no-one can agree. I have so many reference numbers, I can't keep track, and still no assistance and no internet, but I am still being billed. I have no idea how to proceed other than cancelling all Telkom services and starting from scratch with another service provider. I'll probably get internet faster that way.