FlowTrac Software Developer interview questions

The interview took place after 5pm, and flowtrac accidentally left the main doors the building locked, so I had to knock on the door to be let inside. An employee then led me into the break room as I waited 10 minutes past when my interview was supposed to start. As I'm sitting there, I overheard 1 employee getting overly heated while discussing some problem with another employee, this employee started yelling at the other one. Lots of red flags already. When the interview started, I was asked about my experience and then asked to solve a problem. The guy who interviewed me proceeded to "go back to work" as I sat there trying to solve his problem. I did not get this job, nor did I receive a call or email that they went with someone else.