Meta Developer interview questions

I got contacted by an HR. After some email traffic, I got a skype call with HR to discuss the interview process. I solved a puzzle at interviewstreet and they set up an appointment with the engineer at California. Technical Phone interview lasted 30 mins. Interviewer was friendly but he immediately asked for live coding (in 6-7 mins). And because of he is Indian, it was very difficult to understand him as a not native English speaker. He asked for a technical question, wanted to optimize code, and then told me the interview is over.