LifeScene interview questions

I had an interview over the phone, then a few days later an in-person interview at their headquarters. After the interview they said they would get back to me about setting up a follow-up interview and never reached out again. I emailed them multiple times asking when the 2nd in-person interview was going to happen and they never responded. It has now been 5 weeks and I haven't even received a courtesy email telling me they went with another candidate. No contact whatsoever