How to Handle Unknown Airbnb International Charges on Credit Card

I noticed that my Yapı Kredi credit card ending in 3153 has been charged approximately $2.49 every month under the name “Air/360 Luzern CH.” These transactions first caught my attention about three months ago, but they may have been happening for a longer period. The transaction description states “electronics, electrical goods, computers,” and the charges appear on different dates each month. I have no membership, subscription, or service registration that would authorize these charges, and I have not received any contract or invoice related to them.

I request that these transactions be stopped immediately and that a full investigation be carried out regarding these unauthorized charges on my card.