When I buy Captain Crunch or oatmeal, I would never think of returning it.
Yeah, returning used food would be a sh!tty thing to do.
Years ago a guy passed this on from his brother, who worked in the grocery’s deli department.
After Thanksgiving, a woman comes in with the carcass of a turkey, sans meat except for the untouched wings (brother said it looked like piranhas had worked it over).
She demanded her money back because the “turkey was spoiled”. When asked where the rest of the turkey was, she replied that they didn’t realize it was bad until everybody had eaten it. I kid you not. Sounds like her grandkids are doing something similar with electronics.