Don't buy Wimpy gift vouchers

I received a gift voucher for Wimpy, what a disaster. Apparently it can only be redeemed at certain stores, but you will only find out when you are ready to pay. Nowhere in store are there any indication that no vouchers are accepted. The fact that the Wimpy Junction And Princess Mkabai Vryheid's names are mentioned on the Wimpy app as to where to can redeem vouchers apparently does not count when you have a paper voucher. So, my conclusion - don't buy anyone a gift voucher at Wimpy!!! They will send you away