Unhappy customer

Guess I'm back. A few weeks ago I reported bad service from #finrite. I only got a respond after complaining here on hello Peter. After a few emails with them stating that I have not asked to cancel my other insurance with them also I've send them the email stating for them to cancel my other insurance with them. Up till today I still have had no feed back from them and still paying for insurances with them and even for this month of Feb I've been charged for insurance again. The problem is I cant just go to the bank and block them from deducting my money due to me end up having a bad credit name. How can I get them to stop deducting money from my account without getting blacklisted. I will definitely never recommend anyone to take out insurance on you devices. There are thousands of other people who sells insurance.

Regards R