Visa Inc. Software Developer - Internship interview questions

First met them at a conference and got invited to a one on one interview. Was ill prepare on my data structure knowledge. Got a phone call later saying how another team was interested. Went through the phone interview and had trouble understanding the question on codepath as I couldn't interpret the person accent. Lastly another team sent me a hackerrank challenge, was only able to do two and a half. After all that, got a rejection email.

Got referred to the position by a friend who was an employee. Had 2 calls, 1 technical and 1 behavioral. The team was pretty cool to talk to and it felt pretty respectful even when I didn't know some answers properly.