No after sales service

Policy was cancelled when we sold the vehice, via email and the app, and its been 3 months now that the debit order still goes off our account. We have immigrated and tried calling twice about the problem. Failing both times as the call centre is absolutely useless, with both calls costing me in excess of R120 each in roaming costs from holding and calls not answered. I am furious at the moment, the company does not even bother to reply to numerous emails sent via website and mobile app. I will not recommend them to anybody, they are fast to sign you up and take your money but when you have a problem they just do not care to sort it out or even help.