Unauthorized Famradar Charge And Unreachable Customer Support

I recently noticed an unapproved charge from Famradar in the amount of $2.99 on my credit card statement dated 05/23. I have never had any Famradar subscription or made any purchase from Famradar with this card before, so I consider this transaction to be completely unauthorized. After seeing the charge, I tried to call Famradar using the contact number I found, but the phone number was not in service, so I could not reach any support or receive an explanation. I request that this unauthorized $2.99 charge be fully refunded and that any existing or possible Famradar subscription linked to my card be cancelled so that no further charges are made. I also ask for written confirmation that my card information will not be used again without my explicit consent.