Webafrica sending bills for services u didn't even have with them

I app**** for a SIM only deal and cancelled it the same day never got the SIM or used there services yet every month I'm getting a bill from web Africa I mean talk about forcing someone to pay for unwanted services are those people asleep they really have no idea wat they doing stop billing me I don't want or need this service never had the SIM only deal but u bill me it's disgusting be careful people