Spur does not know how to use their own products

I redeemed my PnP Smart Shopper points for a R50 Spur eGift Card voucher. I went to Spur and when I tried to pay the manager and till operator had no knowledge on how it worked. They even phoned their own customer care line which could not help them. They told us they need to swipe a card, yet on their own website you are able to buy an eGift Card which then get's sms'd to your phone for use at Spur, surely this would work the same way as we got a print out from the Smart Shopper kiosk as well as an SMS with the voucher number on.