Symbrium interview questions

I had an initial phone interview that went great. I then went for an in-person interview and spent 3 hours interviewing with multiple people and completing a technical portion. After that much time, I expected some sort of email, even if I didn't receive the job. They never sent me anything afterwards, even when I followed up multiple times. My time was not valued and I deserved an email telling me I did not receive the position.

The interview process started off with an initial phone interview from the CEO of the company. Following this there was another phone interview with the CEO again that was more job specific. Then there was an in person interview where I interview with two workers in a similar role at the company and then toured the facility.