Disappointed

I cancelled my contract with service provider as installation was completed more than a week ago by opwnserve on behalf of vodacom for a fibre connectiin.Till date my internet has not been activated and no one in the Fibre department of vodacom seems to know how to resolve this.Several requests for a manager to call me and this has also not happened.I have been a vodacom customer for many years but it just seems that the word service does not exist in this company