I keep getting calls from this number. Each time, when I answer, they hang up right away. I have tried calling the number  back and it beeps a couple of times and that's it.

This number continually calls and hangs up. When you call them back it is always busy. I have spoken to them before and told them not to call me again, but they dont listen.

480-892-2159 keeps calling me and hanging up when I answer.  Any ideas on how to stop this?

As my cell phone rang with this strange #, I immediately did a google search on the phone#, the result show this as possible spam and for sure it's annoying, so I answer the phone with "F*CK YOU, Suck my d*ck, don't call again you moron" hahahahh!!! and I bet they will never call back.
http://www.lawslookup.com