Today, 7:45pm I went into sainsbury's to purchase an apple, yoghurt and cucumber. As I was leaving the store the security guard was acting a bit odd. As I walked into the car park, the security guard came after me and asked me if I had purchased anything. I asked why? I was curious as to why he felt the need to come after me in the car park. He said the alarm had gone off. I did not hear an alarm and there were other customers leaving at the same time as me. He asked to see my bag, I refused to do this in the car park, so I walked back into the store and requested to see the manager. As i walked back in, I showed him that I was not causing any alarms to go off by walking through the alarms at least 4 times. But they were not still having it. I was asked to go into the back and I was to be searched. I was horrified. I felt like people were invading my privacy and that they were just allowed to search me for no reason. I told the manager that this had ruined my day. His reply was "your day will be more ruined if you don't have a receipt'. I felt so violated, felt accused and judged of something that I was not. After the search was carried out, they let me go. As I left I said I wouldn't be shopping at Sainsbury's again. The manager replied 'thats your choice'. I didn't even get an apology. i left crying. I worked at Sainburys when I was a teenager and have shopped at Sainsbury’s for as long as I can remember. I’m so upset.