Frustrated Customer from terrible service

I have a issue with Vodacom since last year about network on WiFi router and vodacom had failed to resolve this until a technician gave me approval to cancel contract since vodacom have failed repeatedly to provide the service. I have been paying for a service that I have not received. I have spoken to Sanelisiwe Ngongoma, Masonwabo Qalaba, Chris Oppelt, Nomthandazo in retention, and Thembelani Hadebe. Chris Oppelt then advised that she has handed my matter to Debra in Cancelations to call me and proceed with the cancelation but have not received call from Debra nor her Manager. To say I am frustrated will be an understatement. Vodacom staff from customer care, cancelation and retentions are unhelpful. If you have a contract with vodacom I would strongly suggest that you take it to other service provider because they only care about the bottom line not about their customers.