AIBU to be annoyed at nearly new kids big item market

[Kirsty0612]

Went to a jack and Jill sale today, scottish nearly new kids market. They have a seperate large item section. You pick large item go to stall selling it. Pay for it they give u a receipt then u go bk and collect it.

Twice I picked I large item went to pay and it had been sold! It was really annoying. Do all sales do it like this?! Put me off trying to buy anything else. K

I've no idea how these things work, but it was obviously a mistake. I started a new job recently and I've made some embarrassing cock ups which resulted in letting customers down (e.g telling loads of customers about half price chickens in an effort to be helpful, only to find that they had sold out hours ago )

Anyway, is there any reason why you're still annoyed about this at nearly 3am