I received the exact same call. They called my phone under an "unknown number" five times in a row. Then it stopped. Two hours later they called and left the same message many received; this was my "final" notice, I was being sued (yet the automated message never specified whom was actually being sued), and they left me a number to return the call. However, they are now using a different number!!! Very similar but different last four; 509.295.6816 <<<<
I received the same threat from the caller at this number. Woman states that IRS is filing a claim against me and to call 509-295-4458. I know this is a SCAM for sure. I have been receiving multiple SCAM phone calls in the last month.
Call left a voicemail on my answering machine and said to call this phone number 509/295/4458 the IRS was suing me I have reported this to the police department.