Vodacom- The worst customer service ever and they do as they please with billing customers

I am sick to death of vodacom. I had a fiber contract for a fixed amount and then after a while they decide to upgrade the line and charge more and after going back amd forth, hours on phone calls, they finally sorted it out and gave their word my tariff would not increase for the duration of the new contract I had to sign. And again that going my tariff and going against the agreement I have with them. And now I will have to spend ours on the phone again to get this resolved and honestly I will never deal with vodacom again! As soon as my fibre and cell contact come to and end, I am done with them! I am sick to death of this now. And then I get passed from pillow to post and give hundreds of numbers with no one bothering to take initiative for the query. Disgusted at this incredibly poor 'NO customer service!'