Matrix ignores your cancelation and will ***** your money months after you have cancelled

My car was written off in December 2024. I phoned Matrix on 28 January 2025 to cancel my Matrix as I do not need it anymore, as my car is written off. They informed me of the 1 months notice period (actually 20 days). They said I must send a email to give notice, my mail was send to *** as well as *** on the 28th of January 2025. On the 31st of March 2025 I received an email from *** which starts with Re: Confirmation of cancellation.......I could not believe that a big company are finally listening to my request as I am not used to this from any big company. But I was fooled once again as Matrix took a debit order from my account on 20 March, 19 April and again today 20 May 2025. I even got a phone call yesterday to say that I am in arrears !!!!!!!!!!!!!!!!!!! I reversed todays debit order, as what part of "my car was written of in Dec, I cancelled in January, one months notice is till end of Feb" do you not understand ???????????????????? how many monthly debit orders do you want to ***** from me ? I tried to fill in your 'customer satisfaction survey, it does not work" Do not dare phoning me about the debit order which I reversed today as you already stole from me in March and April. Your never ending spam calls is also very irritating and against the law, you can remove my number from your list as I will NEVER recommend you or sign up with you EVER again. You are waiting my time and *****ing my money. I will write a "Hello Peter review" every day I get a phone call from you as it seems this is the only way to deal with big companies. I have all the proof of my cancelation email as well as proof of your cancelation confirmation email send to me. Do not phone me and do not take more of my money