Uncomfortable shopping at checkers Brooklyn

Went to get my baby s26 milk 5 tins 1.8kgs today. Very pathetic security guards... Cant shop in peace being followed around all over the shop, its been 3 encounters now this lady is ever following me. Is that how you treat every customer that shops in Brooklyn checkers i have been to loftus, menlyn and castle gate i have never had such I now feel very uncomfortable shopping there and yet its my nearest store