Rude and obnoxious owner

Was informed this week that I did not pay for a purchase on 16/03/24. A whole month later. How is that even possible that it was only picked up now. What type of systems, controls and financial management procedures are in place in this business that were not able to pick up this supposed error sooner? The story gets more bizarre. First the owner, Angie tells me that the bank informed her that the transaction didn’t go through. Then later in the conversation I’m told I was not charged. She goes on to threaten that the money will come from her employee’s salary. I ask her for proof that indeed I swiped my card that day or footage but she resorts to being condescending and saying I must prove that I paid. Now I must go through my numerous accounts. I don’t remember the method of payment I used over a month ago. There is a possibility that I paid cash but she is not entertaining that. She rather chose to be rude and belittling. I really feel sorry for her employees. In one text she wrote: ‘She maybe did not even swipe. Busy talking or got busy with something.’ I am not her employee. She will not bully me or talk nonsense to me. Then she threats that ‘we cannot accept you in the shop again’. Why would I ever want to go there again???