Pick pocketers in store

Their store in greenstone mall is great, however there is a group of people that come into the store and pick your pockets, This happened to me on sunday and they have no CCTV CAMERAS, the manger could not close the store and says there's no cameras at all, the security said that this was the 3rd time in two weeks were people are geeting ****** in the store, take caution if you go there has there will be no help for you