Pep Riverside square manager treated me inhumane

I went to pep riverside square today to shop as I usually shop there, out of the blue the manager starts following me, I didn't mind that they were doing their job but she started accusing me of *****ing saying should I ***** she will call the police. She did this in front of all the customers, I have been a paying costumer all this time, today she accused me and further threatened to call the police and the tone she used was totally out of order I never stole a thing from them or anyone.