I have made the rounds at a grocery store that is self shopping and all about customer service. Every location that was in a higher cost of living area immediately offered to replace the item or give me store credit.
The one store they had that was in a low income area was the only store to refuse me. They didn't want to say yes or be caught saying no. Her solution was to just ignore me and stare at the counter like a statue until I walked away. They must get so much return theft at that store that they assume everyone is lying to them.
It is not uncommon for some thieves to buy something deeply discounted at one store and return it at the upscale store down the street to pocket the difference.