İş Bankası Charged Me for My Credit Card Without Proper Information

We moved our accounts to İş Bank Kartal Cevizli branch six to seven months ago. On 28.01.2025, a card fee of ₺2873 was charged to my credit card. I spoke with the customer representative and explained that I did not want to pay such a high fee and wanted to return the card. However, they stated that even if I closed the card, they would not refund the fee. When I opened my account, I returned my previous bank card in good faith. If I had been properly informed that the new card had such high fees, I would never have accepted it. I objected within 15 days of the charge being applied. I want to return my credit card and request a refund of the fee. Physical products can be returned within a reasonable time under consumer laws, so there is no valid reason why a banking product, which has no packaging and cannot be damaged, cannot be returned unless this is an issue of commercial ethics. It is not appropriate for İş Bank to take advantage of a situation caused by a lack of clear information about card fees. If a proper solution is not provided, I will stop using the card and escalate my complaint to Banking Regulation and Supervision Agency, Presidential Communication Center, the Kartal District Governorate Consumer Arbitration Committee, and various complaint platforms such as I Have a Complaint, Instagram, YouTube, and X. I will also deactivate my accounts.