Double smart shopper points promised-not delivered

False advertising. I received this sms promising double points and spent R1454.70 at Pick and Pay. I did not get double points but received a voucher for my NEXT shop. I have been on the phone to Smart (?) shopper three times today and cannot get any one to understand that the message they communicated to me is maybe not what they intended. Can anyone else see my point of view?<br> <br> Smart Shopper, swipe your card & GET 2X POINTS on your whole shop. Voucher on till slip. Excludes PnP coastal region stores. Ends 31 May. SMS STOP to opt out<br>