Dissapointed with Telematics after 10 year.

I have had the most dismal service from Telematics,I called their call centre on the 3o May to cancel my services as my car was written off, and I was given the cancellation departments email address as they could assist me. I sent and email on the cancellation department on the 31 May 2022 my debit order went off in May> i followed up with another email. Then another email on the 29 June. I tried calling the accounts department about 8 time to be cut of every time. Is it intentional that no can get ahold of them so that they could possibly syphon more money out of people, I now receive a shocking sms to say that i will be handed over.