Comfort glitch (their words)

I am really disappointed with comfort (Unilever) they have a competition Monday with Shoprite, the 1st 1000 customers buy 2 400ml comfort they give your R400 off your bill. I was there when it opened and done by 8:18, it didn't minus, I assume they were taken, so went our group not one person got, so we ask comfort what is happening? PS I spend almost R600. By 10 o'clock we were getting messages on Facebook comfort had glitch theirs words I do have all screenshots, incl saying they let us know etc yesterday said we get our vouchers today. We haven't got anything from them. Worst part spoke to Shoprite said it was comfort glitch and not Shoprite and we deal with. Well they not coming back to anyone anymore. Shoprite said all voucher was finished already even though we were 1st (their words 1st 1000) but before their glitch we lost R400. The t and c wasn't available at time only come up after 10 o'clock. Looked like damage control. T and c said you can will but all screenshots etc 1st 1000 customers will guaranteed to win. It am shocked and so disappointed.