Easy to get into ,impossible to get out

Last year in October , i purchased a new car. I called Miway to update my policy i had with them, indicating that i had bought a new car. we went through the process of renewing and updating my policy. The quotation i received from them for my new car , was 3 times what i was paying on the vehicle. I than requested the Miway personal to please revise and re-look, when he indicated that there was nothing he can do as the system has provided him with the quotation. I than requested that my policy be cancelled. At this point i assumed that it had been cancelled. I realised that i am still paying insurance on a car I no longer have. I have written to Miway to cancel my t policy till today to no avail, I have to continuously return their debit which bears charges. A year ago I complimented them for such great service, today I am of another opinion. I really don't understand what is so difficult with cancelling this policy, I have also just received my update policy from them. LOL I will never recommend Miway to anyone, due to this service.