Cashiers

Checkers Hyper Vanderbijlpark I buy my groceries at the above mentioned store every month, and every time I check the slip, the cashier 'scan' more quanties of an item then what I actualy bought, for exmaple, I buy 4 Stork tins, they ring up 5, I buy 5 packets of bacon, they ring up 6. This happens every time, I have to double check my slip every time