Clicks sells rotten staff

My daughter and my niece went to clicks Westgate yesterday and they saw some snacks on sale and the bought 4 packets of D'Licious strawberry pretzel knots which on on sale for 5,70 each, and when they opened them they realised that they tasted funny, and the wanted to throw them away, I decided to check them and they expiring date was the 09/06/2020 meaning they expired 3 weeks ago.I was shocked to realize that a big retailer loke click that promotes health they can sell rotten staff to people I'm even gonna go further to report this matter cause they should have thrown out the expired staff long time ago, what if they I didn't check and my kids ate them and had food poisoning