Unpaid Policy Premium long after the car was sold. Not possible to cancel policy.

I bought a new car with a standard 5 years of installments from MFC. Along with there was a "Lifestyle protection plan" for the car which was taken over by M-sure. MFC paid this money to M-sure every month as apart of my premiums. The car was paid off after the 5 years, owner was transferred and I sold the car.

I then I got an email to say "Unpaid Policy Premium – Lifestyle Protection Plan" The next day I spent about 20 minutes on my cell waiting for customer services to answer my call to be taken. I confirmed with customer service verbally that the car was sold and I no longer wanted or needed the policy. I also asked why this was not cancelled when the 5 years was up and why I would have got a message since MFC paid for the policy and not me directly. The customer service agent confirmed that the policy would be cancelled and I would get SMS confirmation which I never got.

One month later I am getting the same email again. Obviously it was not cancelled.