1010data Developer interview questions

The first interview was a phone interview which was very easy and tested the basics. I received the on-site interview shortly afterwards; I was told that I would interview with four people separately and got small breaks in between each. After three interviews,the recruiter told me that there was "an emergency" and that the interviews will have to be rescheduled, and he also mentioned that he would reimburse me for the travel, which he would contact me about later. I waited and emailed the recruiter a week after. I never received a response; they ghosted me.