Hello Innovation Tech Support Representative interview questions

I initially did a video question interview taking 45 minutes. I was then sent a test and some paperwork that took an hour give or take. After that I qualified for a follow up interview that took 30 minutes and seemed to go very well. Following that I was given the opportunity to interview with a few higher ups which took roughly 30m to an hour and seemed to go well. After all of that time put in the company ghosted me. I sent a very polite follow up email with a request for the status of my application and did not receive any reply at all. I understand companies can be busy but it is very frustrating to get far into the process and not hear anything while also interviewing with other companies. Everyone I talked with was very nice so the lack of response seemed very uncharacteristic.