Till operators are *****ing our money at boxer

Till operators at boxer *****s customers money , if you not looking , you will find yourself paying something that I didn't buy , when I take something on the isle I use acalculate but at tills I pay more I wasn't aware but I knew something was fishy when I got home I checked the slip only to find out that I paid for items that I didn't buy that means the till operator is a ***** and this was not a first time happened just I wasn't aware but know I knew something was fishy cause all of a sudden she was nice and till operators are always angry to serve customers . Boxer don't have customer service