Unsure if scam?

Scam Number: 763-341-9411
Scammer’s Website or Email:
Additional information about this scam: Have been receiving repeated calls from the same number for nearly a month (763-341-9411). They usually only call during my work hours but also called at 8:55 last night. Usually I don’t call back numbers I don’t know but I found it weird that it was the same number over and again. Every time I call it rings for a little bit then says “the person at extension 5 is on the phone” and then immediately hits voicemail. Is this a scam or some company actually trying to reach out to me?