Wrongful Detention

I got into Spar and they searched my handbag at the door as I was leaving. When they found a bottle of perfume in my bag they said I stole it because they sell the product. I told them it was mine and they said they would hold it and me at the door till they played the video on their cameras. It took them close to an hour to finish the whole process, and when they were done, after finding out that it was mine, they didn't even apologise. They actually told me that they don't apologise since I was supposed to declare all the items which were in my handbag at the door. They said I'm the one who should apologise to them since I put them through the trouble of going upstairs to play the video. When I went to tell the manager that I had been held at the door for almost an hour he just brushed with his hand as he was drinking his coffee and said he would speak to them about delaying me but I could tell from the expression on his face that he didn't care.