Dell Technologies Senior Developer interview questions

It was a typical hiring process. Had a phone interview with the hiring manager, who seemed to really like me. He decided to skip the next phone interview to go straight to on-site, which was fine. The on-site was your typical interview as well. Met one-on-one with 4 engineers. I think I messed up on the first person due to nerves, so wasn't really expecting an offer. What I was expecting, however, was a response either way. Here we are, three weeks later, and nothing. I've asked for status and the only response is "we're still waiting to hear." No you aren't; they just don't care to say. I find it very unprofessional. I would avoid Dell.