Samcom/ Vodacom

We were put onto a Vodacom contact by Samcom for our business cloud-based business telephones in August 2018. We had endless problems with the lines and eventually cancelled the service in August 2019. We are, to date 9th Nov 2020, STILL waiting for Vodacom to cancel the contract. In the meantime, Vodacom has reported our company to the credit bureau. A month ago, Samcom asked that we invoice them and they would take over this contract. To date, more than a year later, nothing has been done and Vodacom has still not cancelled the contract. In what world does a company expect to be paid for a service they cannot provide?