Security their unprofessional

I was at shoprite newtown in johannesburg,after paying my goods around R400 the security they stopped me and told me I need to go to security in order for them to search me.I was so damn ****ed as he doesn't even explain the reason why he is doing that.later one of his colleagues came and said to me that they saw me *****ing R5 chocolate wow what a disgace of unprofessional security guards.after they searched me I asked them did you ahieve what you wanted they were unapologetic iliterates guards.I will never buy there again service was poorer.