AutoZone review: accused of theft

I had went to autozone 4303 W Commerce St
San Antonio, TX 78237
United States and was looking for a item a employee came up to me, helped me and payed for my item..as I got in the car the manager tells me to row down my window so I did and he said sir please return the items you didn't purchase Or I will call the police Which was That one item That I purchased and I told him I have the receipt and he kept telling me that he had me on camera stealing