Poor service

On 13 October I have send them an email with cancellation with immediate effect, whereby my monthly premium was R580. on 30 November they do a deduction of R925. My original complaint was that their radio signal is not working. Asking for assistance, a month later they still have not send an technician to sort out the problem. The moment that I said I would like to cancel the subscription, then all of a sudden they want to give me 2 months free and expect me to be still a loyal customer with them. This morning they said that my cancellation is schedules for January. Please people follow up with them constantly otherwise they will be the ones robbing you blind with over and the above norm tariffs and poor service.