Susan Dennison recently had an unsettling experience at her local grocery store, a Loblaw-owned Fortinos in Burlington, Ont.

Just as she was leaving, the wheels on her shopping cart locked up — making it immobile.

She said a store employee rushed over and demanded to see her receipt.

"I felt like I was ambushed," said Dennison, who scrambled to find her bill. "She's badgering me, like, 'Is it in your wallet? Is it in your pocket?'"

She said she was finally cleared when the employee found the receipt — in one of her shopping bags.