Pack-Smart Software Developer interview questions

I got call from HR and then I scheduled for in house interview in Nov 2020. It was a technical interview related to previous experiences and ask me to write some basic oops concept question in half an hour. Interviewers are nice and polite. I got an offer after a week but When HR asked me for the salary expectation ,she misinterpret the information and that is the reason why I didn't accept the offer.