CVwizard Unauthorized Payment Request

I had a subscription with cvwizard.com, which I cancelled after contacting their support. They sent me an email confirming that my subscription was cancelled and that I would not be charged again. Despite this written confirmation, today they attempted to charge my debit card again in Pakistan. I find it unacceptable that a charge attempt was made after they clearly stated that my subscription was cancelled. I no longer wish to use their services, and I am uncomfortable that my card information is still being used without my consent. I request that my subscription be permanently cancelled, that my card details be completely deleted from their system, and that I receive written confirmation that no further charges or charge attempts will be made to my card.