How do I report an employee?

Hey guys. So I used to work at cvs but I still want to shop and visit old coworkers. I was there as a customer last week and the ops manager threatened to call the police on me claiming im banned. I didnt leave on a good note with her...and finding out through a different manager today, im actually NOT banned. She was telling me I'm not allowed in the store, telling me the sm went as far up as telling hr I'm not rehirable at that specific location. She just got promoted and already expecting to be a smit in the near future. So what can I do? She lied and kicked me out of the store. She abused her position.