Left message saying they are the IRS is bringing a case against me. I don't have any outstanding debts with the IRS plus they would have sent a letter anyway. Have heard of a lot of scams like this.
This is a pervasive scam which has bilked thousands out of millions of dollars. If you send them money, not only will you never see it again---but will set yourself up to be targeted again for even more money. A local woman who paid them 5K a year ago is now receiving death threats if she does not pay them another 1K.
No one at this website is calling you. The callers are hard core Indian and Pakistani scammer/extortionists who ignore all US laws. Be on the lookout for 347 are code callers, the scammers use that area code often. Invest in a call blocker and DO NOT pick up on call numbers you do not recognize.