Varian Medical Systems Software Developer interview questions

I applied online via LinkedIn. I had a behavioral round with the team manager. Followed by two rounds of interview with two of the Sr Engineers in the team. After the second round I was informed that I would get a feedback in one week but after three weeks and three follow up mails, I realized that I have been ghosted. It is really disheartening when they do not even send a rejection mail after so many follow-ups. I constantly keep checking my mails. This is really sad, to not respond to even a single mail after the candidate takes up interviews with three different team members. I think Varian should do better.