Airbnb Did not Refund My Canceled Reservation, Bank Not Notified

I made a reservation through the Airbn app and canceled the same day. No refund is made. I call my bank in Turkey and it says that airbn did not refund money and they did not inform our bank about the cancellation. Nobody is helping me with this. The Airbn app is never reliable. It doesn't do any refunds either. They literally stole my money. I trusted its international application, but I was very wrong. Here is my booking code for this brand, maybe airbn will see it and help.  HMBR3CYJ59The source of the money is airbnb, they shouldn't keep me waiting like this anymore. How many days has it been, I had already chosen this site because they offer refund, cancel option...