Caller claiming to be from the IRS.With a thick foriegn accent. Left message for me to call back as soon as possible

Don't know how many times now I've been sued by the IRS (ha, ha)...but they are trying again. In fact, they wanted to sue me so bad their robo-voice called back before my phone's voice mail could reset and it went to Comcast's readable voice mail which was emailed to me. Idiots!!!

Informing me that the iRS is starting a lawsuit against me and I should return their call immediately.. I tried to call them back I really was in a mood to tell them where they should go but the line is busy too bad.