Poor customer service from Telkom insurance

Hi, I have a contact phone with Telkom and also have a taken an insurance phone for it. Since, March 2021 I have been calling them and there's no luck. I have requested them to cancel my phone insurance hence I cannot make claims and they refuse to do so. They still deduct in my account and I recently informed them that I will be notifying my bank to remove the debit from Telkom since their business is very useless to me. When visiting Telkom , the consultants at Telkom informed me there's none they can do relating my claims and I have to contact Telkom insurance. I have been sending emails from March but no help till today. I never miss payments but the service I get is unpleasant.