Customer needs a new printer. "Do you need colour printing" "Only rarely" "OK get a brother monochrome laser, and do your rare colour prints at a kiosk. Inkjets will clog up if you don't use them."

Customer calls the next day, they've bought:

inkjet

display model (no others in stock)

Which turns out, after setup, to have a faulty scanner. Setup program can't detect it, Windows can't detect it, even the scan button on the machine won't work.

They take it back, and acquired what I told them to get in the first place. That machine worked perfectly.

But here's the story: they bought from a well-known mass-market general goods retailer in Australia by the name of Harvey Norman. It's popular because of saturation advertising, not the quality of its goods or services.

When they took the first one back, the salesperson first said "We can fix that." "No, we want a refund under warranty." "It's a display model, there's no warranty." "Yes there is" (the wife is a lawyer, and took a printout of the relevant laws with her) "Oh, you've installed the ink cartridges, that voids the warranty" "No it doesn't, we want a refund" waving the printout at him. They get passed off to someone slightly more helpful, who offered them a store credit. Once again the printout was waved. They got a refund.

And that's why you should never, ever shop at Harvey Norman. There are many other reasons, but that one alone is good enough to never buy from them.