RS does not file lawsuits. Tax disputes are civil matters. 90% of all IRS tax disputes are settled administratively. IRS has absolutely no authority to call on local law enforcement for anything. Local law is never involved in IRS tax disputes. If LE is necessary, US Marshals do the job. IRS does not cold call anyone and all contacts are initiated by US mail.
I recently checked voicemail for our landline (we do not give out the number), received a female robo call from 728-452-5677, said this was the final attempt to contact me about the IRS filing a lawsuit, said need to call 206-973-3241.
Also, received a 2nd voicemail, from a different phone number 739-454-2427, same robo call, this time a male robot, said this was the final attempt to contact me about the IRS filing a lawsuit, said need to call 202-684-3436.
And received a 3rd voicemail, from a different phone number 731-404-2627, same robo call, male robot voice, said this was the final attempt to contact me about the IRS filing a lawsuit, said need to call 202-684-3436.
I did not call any of these numbers back after finding this online.