I interviewed through a recruiting agency Insight Global for an SRE role with ADT. One round interview. It was like a casual conversation about my previous employment, my goals, and my ability in different technologies and Python. I answered everything well, at least according to the Interviewer. I flew through the Python questions, and even asked my own and managed to stump the interviewer in the process. A few days later, I get notified that another candidate was offered the position over me, and that the recruiter stated there were issues during technical questioning and that he had to have me Google search answers, which is completely untrue. I raised objection with Insight Global whom informed me there was a mix up between me and the other candidate and that they would follow up on this. 5 minutes later I'm told that it was confirmed to be a mix up and they were still going with the other candidate. Unbelievable experience. Absolutely vile.