Costa Coffee Refuses Euro Payments Despite Displaying Prices in Euros

I would like to file a complaint regarding an experience I had at your Costa Coffee branch at Adnan Menderes Airport on June 4, 2026, at approximately 8:40 AM. I made a purchase worth approximately €10. Although the prices on the menu were listed in euros, I was not allowed to pay in euros when I requested to do so at the register.

The cashier told me that I could only pay in Turkish Lira and that the amount would be converted using an exchange rate determined by Costa Coffee. When I objected, the employee stated that there was no other option and that they could only accept payment this way. As a result, my credit card was charged $11 for a purchase worth €10. This exchange rate was approximately 3% higher than the rate applied by banks that day, meaning I was effectively forced to pay at an inflated exchange rate.

I consider this practice by Costa Coffee to be an unfair way of making additional profit at customers' expense. I expect customers to either be given the option to actually pay in euros or to have prices displayed in the local currency, as is common practice at other businesses, with the option of converting the amount into euros at the prevailing exchange rate if necessary. Under the current system, although prices are displayed in euros on the menu, customers are forced to pay in the local currency at an inflated exchange rate, effectively being charged an undisclosed currency conversion markup. I demand that this practice be reviewed and that the pricing and payment policy be urgently revised to prevent other customers from experiencing the same situation.