Service Provider not responding

I have contacted the service provider on numerous occasions to cancel my contract with them since last year and still today I have not receive feedback from them.<br> <br> I informed the service provider on my mails that I have sold the vehicle contracted with them but they still debiting monthly premium from my bank account. This need to stop and the funds deducted from my bank account from the date of my cancellation request need to be refunded period.<br> <br> Regards<br> Steph