Had a customer at work get very upset that a discounted item doesn't exist anymore. We had a new item, gave it a giant sale to introduce it, sold all our stock at a net loss, and basically no longer have it shipped to us and they're trying to change the product to be profitable. Item is $ 7, sole it for $ 4, cost of production is $ 6. We sold about 7 racks filled with 160 of them each. So we lost about ~$ 3,360.
So she whipped out her phone saying "I came all the way here to get this item!" and I, alone, 20 minutes before closing the department, am trying to calm her as she's asking for the manager (I am, "technically", when alone). She is asking for my name to file a complaint against me. I have a coworker whom I told this was happening after she left, and I have a really good track record at work, so I'm fine.
The new item existed for 3 weeks. The newly removed item hasn't been removed from the app yet so people have been flocking to it because they think the sale still exists when the item itself doesn't.
But it took a lot of my energy. I stock items. I don't control what exists.