Western Union Euro Conversion Scam

Western Union pays me in Euros. However, when I visit WU branches, they demand on paying me in Turkish Lira, saying that Euros are not accessible. It is a covert commission system. They try to offer me a lower exchange rate. And we have already paid the commission to WU! This occurs at several branches, including the Shell petrol station in Antalya Güzeloba and the Kundu branch. When I contacted WU, they simply told me to go somewhere. But I went to WU. I have recordings of these conversations. Shouldn't Western Union hold their agents accountable for this?