Review Missing item in the bag

Checked my stuff and receipt upon reaching our home... Found out that I have one missing item that has been paid for. Unfortunately the store is 45 minutes away from our home... I only bought items randomly because the dry yeast that I was looking for is not available... Do you check your baggers bag before they leave the store? I was wondering if it's intentionally done because the store was not that busy when I was on the cashier... I was alone in the aisle... It was only a bottle of shampoo but it is upsetting to think that it was deliberately taken from you...