Bad service

There is a special running at pick n pay for base tshirts, it’s R100 for 2. The Tshirts are all packed on the same table. So we when I get to the teller the special doesn’t apply. The gentleman tells me I need to take 2 female tshirts or 2 male. I’m baffled by this as it’s not specified anywhere and to make matters worse it’s all packed on one table. The gentlemen was not helpful at all, he kept saying that the posters are separate.