Contract Cancellation

I paid my premature contract cancellation and sent through all the required documentation on the 15th of November 2017 but because my email subject was "Contract Cancellation" and not "Premature Contract Cancellation" they were incapable of cancelling my contract. As a result I have now been debited a monthly charge and have spent more than an hour on the phone trying to resolve the issue, which has still not been resolved.

Terrible call centre service and service in general.