Cashback Vouchers

<p>So...<br />I started putting petrol in at Shell thinking I was rewarding myself to get back some cashback vouchers - i accumulated R50,40. It was my birthday in March and I received an sms from the Bodyshop (now partnered with Clicks) - happy birthday Miss Perks, come into our stores during your birthday month and get R50 off your purchase - which they send to me every year! - Then when I tried to redeem my cashback vouchers at the Clicks till they said id already used it?