PDF-CHARGE.COM Unauthorised Payment And Subscription

I recently discovered three unauthorized transactions on my Visa debit card from a service identified as PDF-CHARGE.COM. On 18/09/2026 I noticed that a total of 47.90 pounds had been charged in three different transactions. While I did at some point sign up for a service or trial with this provider, I did not knowingly agree to these recurring payments and did not authorize these specific charges. I have tried to find a way to contact PDF-CHARGE.COM and cancel any subscription, but I have not been able to reach them or find effective contact details, so I am currently unable to stop further charges from being taken. I request that all three payments, totalling 47.90 pounds, be fully refunded, that any existing subscription or recurring payment linked to my card be cancelled immediately, and that I receive a written confirmation that my subscription has been cancelled and no further amounts will be charged to my card.