I sympathise @OreganoOregano146 there's nothing worse than being in a full shop and being incorrectly accused of theft. It's mortifying.
I had it in my local Asda. Unbeknownst to me, when you buy clothes in the sale, our local store has a glitch which means sale items always set the alarms off. The security and staff know this.
However, as I was leaving one evening, it was packed. The alarm went off. I stood still and this huge fella comes over, grabs my trolley and drags it backwards. There was simply no need to need for him to behave that way, I made no attempt to leave the store and even if I had, it wasn't a door that led to the street, it's inside a complex.
Anyway, he then growls at me that I am "being detained" for the "purpose of a search due to suspected theft".
I have worked in retail over the years and knew 100% that what he had said was entirely made up and they have to call police to detain a suspected thief. So I said this and pointed out I wasn't a thief anyway.
This seemed to annoy him. "You're a smart Alec little cow aren't you" he responded. At that point, I told him he needed to call a supervisor over. He declined and shouted "thieves don't get to call supervisors." He clearly wanted to embarrass me and people were all looking. I tried to remain calm and not show my upset as I knew he was the type who would enjoy that.
I showed him I had a receipt, and he said it meant nothing as clearly I had attempted to steal something.
Luckily for me, a supervisor did walk over to see what was going on. She said to me "did you buy anything from the clothing sale" and I said yes why, she asked to see it and my receipt, had a quick glance through the rest and then said I could go.
I was livid, I had been spoken to like shit, embarrassed and called names by a male. I wanted an apology and his name and company but he told me to piss off.
I posted on a local group to warn others not to buy anything from the sale and the sheer amount of others treated like me was shocking. I was advised by two women though not to take it further via Asda as they had subsequently been given a ban from every Asda store despite not having stolen anything.
I won't buy from there now. It was the second poor incident with Asda and that was enough for me.
I would however hope you do walk back into your local store and point out their theft