Can a place deny you for needing a day off for religious reasons?

Apologies if not allowed, I didn’t know where to post this (delete if needed)

I recently had an interview with a big name company whose name I’ll keep anonymous.

During the interview, they asked my availability, to which I responded to having every day other than Sunday available since Sundays are unavailable due to my religious reasons. They then forced me to write a time I would be available down for Sunday. When I reiterated that I am unavailable Sundays, they shook their head and stated that it was “unfair” that I wanted Sundays off since everyone wants Sunday off. I am purely confused as to if this is normal and possible advice through similar situations if this occurs again. I am not trying to look down on the company or the interviewer! Have a lovely day all ♥️