Scam don't call back this number there in a call center looking for victims to call back I got same call as every one else they in a diffent country post on your face book about this scam
I also received one of these calls claiming to be the IRS... For starters, it was quite clearly not an actual person, but some sort of automated voice system... and then there is the fact that I've only been in the US for ~ two months, so I find it rather unbelievable that the IRS would be filing any sort of lawsuit against me already!