TAKING VOUCHER WITHOUT WARNING

We ate at Georgia Spur 25/9/2015 at 19h57 we paid bill and left, proforma invoice ***. Gave my Spur<br> family card for them to enter the new amount to my card. I did not mention any vouchers on my card, nor did I asked<br> them to take of any, in any case there was no discount to my bill what we ate we paid for. About 5 minutes<br> after already gone and on our way back to Margate I received 2 sms for 2 vouchers going of my card for R50.00<br> each thus R100.00. I decided to phone them and spoke to a lady manager, we got cut off. We decided to<br> go back to the Spur to enquire about the vouchers going of. Upon our arrival a invoice was presented showing R100 less then on my proforma invoice but made out at 20h02. No explanation was actually given as to what<br> went wrong and a R100 was given back to us. My question is just this, what about people not getting sms <br> do they just loose the their vouchers and who collect the extra money the waiter, the cashier of management.<br> Thanks for the money being given back but please investigate the matter.