Spin to win is a ****

Checkers extra savings spin to win play mind games with customers. I win 500 voucher in the spin to win when I try to use it at Rustenburg mall I was told it is invalid I need a reference number. How do I get a reference when I had a voucher number with me. The ground manager Kgaugelo ended taking the voucher number to enquire up to this day I have not got any feedback. This is playing with customers with spend lots and lots of money every day buying in your stores and that's a thank you, you give people?