Meta Data Scientist interview questions

A recruiter reached out to me and asked if I want to apply for a data scientist position at Facebook. And I said yes. He scheduled a time to describe the process which would start with a coding challenge. Later on, they scheduled the coding interview, but a few days later the recruiter contacted me and said I got rejected. I actually got rejected before even I get a chance to start the process. Nonetheless, as the coding interview was already scheduled, I used the link they had sent me to connect to the interviewer, and surprisingly some one was ready to ask me the question. Anyway, I did pretty well in the coding part, but when I sent an email to the recruiter and asked about the outcome of interview, he sent me a template of what they usually send to tell you that you got rejected. It was a very strange and unprofessional type of interview experience.