Accused of acting suspicious in the store

Good afternoon, my name is Philadelphia and I would like to lodge a complaint. Today the 23rd July 2022 at around 14:00 I was at shoprite grocery store at quaga center with my partner we were buying some few items and my partner paid and we left the tellers, as we were about to leave the store we produced the receipt to the security guard then we were called to the side by a shop regional manager accompanied by the a group of security guards then we were taken to an office where we were told that they wanted to search us. It was very disturbing to me as I enquired what was the reason. The regional manager indicated that they were conducting a random search. I refused to be searched because I was not convinced by their reasoning. Then the regional manager indicated that one of the customers indicated that they saw me and my partner acting suspicious.I then suggested that they check their cctv camera footage for prove it but they did not. I felt very violated and degraded and undermined as shoprite accused us and acted upon baseless accusations and assumptions. We were harassed for more than an hour as wanted to Know what I'm being accused of and I told them to rather call the police which they did not. Am aggrieved because we were released after an hour after being torture for no reason.