Vodacom Fibre Nightmare

I took out a contract with Vodacom for my fibre ISP, and it was slow but it happened. Since then I moved, and had to get VUMA to install the fibre box again, and they said I must contact Vodacom and give them my new object code so the router can function again. First time I then phoned Vodacom, I gave them the new code and I was promised it will be sorted. Nothing happened. 4 days later I phoned again. Then I was told my router is married to my fibre box and they would now need to replace my router.... nothing happened. 3 days later I phoned again, and the lady said she will have a look for me after I told her my story. She put me on hold forever, and then cut me off. 4th Time I phoned Vodacom, I got helped by this rude lady who started shouting. So I said I would like to cancel my contract with Vodacom, as they do not deliver the service they promised. They are in contract breach.