Employer was interested in me & then ghosted me

On Nov 25 an employer sent me an email saying that the want to discuss the position with me & they hope to hear from me soon. I responded right away saying I would love to discuss it with them. They never responded so Dec 2 I sent a follow up email seeing if they were still interested. They still didn’t respond so on Dec 4 I called and asked for the dept manager who emailed me & they said they weren’t there at the moment but that they would tell them I called. I still haven’t gotten a call from them. This is a job I really want. Should I just assume they don’t want to hire me? Or should I keep calling them until they outright tell me they don’t want to hire me?