Vodacom fiber nightmare

I ordered Vodacom fiber at the begging of February. The sales rep for our area in Durban’s name is Kreesan. Right from the start the service I received was terrible, I still have not received even a second of internet. I cancelled the application after a week of fighting with the totally useless rep, Kreesan, and went with Mweb. Vodacom’s call center is just as useless. They don’t give references for the calls and none followed through with anything they said they would do. I finally managed to get a cancellation reference and yet I’m still getting invoices from them and the debit order keeps coming off my account. I have reversed the debit orders and have actually given up trying to get this resolved as Vodacom is seriously that useless when it comes to their after sales service. What to do now???????