Appalling and discriminatory mess up from Woolies

Idiotic mess up from Woolies. They advertised a voucher for new members of W Cellar (R75 off minimum spend of R200) in one of their magazines. I scanned the QR code on my phone and filled in my details on the form on my screen, then sent it off. A few days passed, I never received any acknowledgment from Woolies for my membership entry and there was no voucher in my Woolies app. So I asked a couple of managers in-store next time I went shopping, but no one seemed to have a clue. Then I asked Woolies on their Twitter page.....and after a day or so got the reply: "As per the Ts&Cs, you need to have a SA ID to enter", followed by a link which didn't lead to said Ts&Cs. So I found the Ts&Cs myself, here: https://www.woolworths.co.za/corporate/cmp210631 - and there is no mention of having to have a SA ID, merely the need to have a reward card and be resident in SA, both of which conditions apply to me. I have lived here full time for nearly 7 years and been a Woolies Reward Card member for around 6 years. Moreover, how would it be sensible, logical or fair to discriminate against "valuable" customers simply because they were born somewhere else or don't happen to have a SA ID?!? I've never been excluded from promotions before on that basis. Not only is it wrong, it's discriminatory - and exactly the kind of thing which makes a loyal customer vote with his/her feet. Kiss good bye to my R30k/year spend.