Of course I can return it. I used to work in a gym. Your private lessons are held in the gym. If the coach resigns, you take the receipt to the person in charge of the gym, and they must give you a refund. If you don't return it, you can report it to the Consumers Association or the industrial and commercial department. No gym dares not give you a refund for such a thing. Please give my answer a compliment. ...