Testora Pro IQ Complaint About Recurring Charges After Trial

I am writing regarding my Testora Pro IQ subscription, which I used only once as a trial and did not intend to continue. Despite this, my card is still being charged and attempted payments are being made without my explicit consent or awareness. Today I noticed an attempted charge from Testora Pro IQ to my card, and I was informed via SMS about this transaction attempt. I do not know the exact date when these recurring attempts started, but I only became aware of the situation today and I am very uncomfortable that my card details continue to be used. I request the immediate cancellation of my Testora Pro IQ subscription and the prompt cessation of all current and future charges or charge attempts to my card. I also request written confirmation that my subscription has been cancelled and that my card information will no longer be used in any way. I kindly ask you to process this urgently and to ensure that no further transactions take place without my explicit approval.