VUM, a ****

A couple of weeks ago my a premium that was way more han what I signed up for, was debited without my consent. Upon investigation, I was informed that they had increased the premiums due to high claims, no communication. I've put in a claim for a windscreen, to date it hasn't been paid for . I then canceled the service due to the ridiculous premiums. Which was confirmed in writing. 2 months later I'm debited. Can someone explain why is this, while at it I want my money back as well as bank charges related to this mess. Im happy with my current insurer and want nothing to do with your *********** business.