I have an issue I put 20$ bill into the bill change and it never gave me any money back.? How can I get a refund? I took a picture of it and it says "In: $20 Pay: $0.00"

Write a note with your contact info and slide it under the door next to the change machine and he'll contact you and give you your refund

They have a worker driving around on a golf cart ask him?

I think yoi should tel maintenance there or call 1-800 number should be available