PayPal Software Developer interview questions

Onsite round - Coding test (easy Hackerrank questions) - Technical round (questions based on previous round and other questions) - System design round (asked to design system on whiteboard, questions on that and discussion) - Hiring Manager round (System Design round + Behavioral questions)

I applied online and received an online assessment. Couple days later, I get contacted to schedule a phone interview. The phone interview I had was terrible. The interviewer demanded I use Java and even implied that I wouldn't be fit for the job if I didn't use Java. 1. All coding interviews are language agnostic. 2. Could have let me know beforehand if the phone interview was to be done in Java. I think the interviewer basically failed me after I told him I've been preparing for interviews in another language, so I am going to use another language. He didn't give me helpful hints and kept questioning my Python code during the interview.