It was less than 20 minutes of an interview where the recruiter was like a robot making the impression they wanted to finish as soon as possible, no comfortable at all. They asked me what I should offer to a customer when they purchase a mattress. I suggested a discount for another item like a pillow. They asked "What's the benefit for the company in offering a discount", well, you said you want to offer something, and this solution may make the customer purchase more items from the mattress. "Well, then you are not offering anything, it is just a discount." And they looked at me with disgust and then asked me to calculate by heart 4,75% of 440 without using a calculator. I had a few seconds, and because I failed to give the result the interview ended. It was the strangest interview I've ever had.