AGM Advantage interview questions

I had a brief preliminary interview. Followed by a longer, more detailed 2nd interview. Then a final interview all across the span of about a week. The first interview was a little bit more relaxed, the other two I could tell how competitive the process was

They are too persistent in calling beforehand it seems like a scam, they left over 5 voicemails, there isn’t much on their website too, I look up their location and nothing comes up