Got a call from this number. The caller left no message.

They left a message on my cell phone saying there is a warrant under my name and I must answer immediately to prevent further action. When I called, they said they were IRS. I knew they had tried to scam folks in my church just last week. I called them back, told them we had traced the call, and I would be there in minutes with a Sheriff's Deputy. They hung up on me. When I called back, they hung up again.