Unauthorized Transaction By eDreams From My Credit Card

Dear Sir/Madam, I noticed a charge of €54.99 on my credit card dated 31/03/24 from your company. It says it is E-Dreams Prime charge but this is beyond my information and my last and only booking from your company took place in April, 2022. Since then I have not used any service at all, that's why I kindly request a refund. If I am not refunded, I will seek my rights by taking legal action. Could you please investigate this matter? Thank you for your attention to this issue. Kind regards, Damla Kab**