Rejected in round 3 after HR disclosed 6-day work week only post-interview, not for technical reasons

Application

I applied online. I interviewed at Zomato (New York, NY) in Dec 2018

Interview

Main reason of negative experience was HR Tenzing. She should told me before interview start that they work 6 days in week. All things were going well until 3rd round when their HR recruiter Tenzing come and told me we cannot select you because u deny to come on Saturday. She was explaining philosophy. My question is why u waste my time, can't you guys discuss that you need a guy who can work on every Saturday. Basically Zomato wants a brilliant candidate who works 6 days in a week. Very negative experience just because HR should told me before interview that we work 6 days in a week. I waste my 8 hours their and then find the reason of rejection

Interview questions [2]

Question 1

HashMap working