The voicemail was robotic claiming I was hiding money from the government. I returned the phone call, and he asked me if the voicemail was in regards to my income tax. I told him I didn't know, because I didn't understand. When he asked for my name I said, "No! You can send me a letter like...." click. Obvious scam.
Same as all above people said. Robot message left. Fraud with taxes last year. I'm not worried because I don't think tax people would use automated message to contact us if this were case. And we had no problems with last year's taxes!