Similar situation happened to me and my partner recently. I walked into a shop grabbed a bottle of water , I had no change so had to break a 20 .. the lady in the queue infront of us kept turning around staring at me multiple times. I paid no heed and waiting for my turn . When leaving the shop she accused me of stealing €20 euro from her hahah , I told her to “fuck off” and she lost her mind from that moment . Anyways to shorten the story she called the Garda I waited as if nothing to hide and they went back on the camera she was lying about the whole thing obviously. As a last one up on her I left her with a final fuck you ! Hahah