Poor service with no infrastructure to service customers

I cancelled my internet connection with Vodacom because I moved to a different area, they dont have infrastructure in thay area, what am I supposed to do? Continue to pay for a service that doesn't exist? I had to find another ISP . I had a month to month with Vodacom, they failed to provide me with a service and expect me to pay for what? They listed on my credit profile that I didn't pay? Pay for what exactly? I'm not going to let Vodacom ruin my name. I'm going to report this everywhere.