Bring followed by security in the store

I understand that security is important in any store, however when the security starts following you around the store as you are browsing that makes one very uncomfortable. I was at Truworths in Rosebank mall and a security was following me around the store, I asked the guy if I did something wrong as he was watching my every move as I looked through the racks. I eventually left all the items I was going to buy and left the store. This is the first time I was followed in a truworths store by security. All the other stores you don't even see them. This was the most uncomfortable feeling and I will not be going back to that store. B