automated call stating 'we have been trying to reach you, this is your final call from IRS'

Same here. Automated call saying the IRS is going to file a lawsuit.

Yes, same here. Very scary! Stating it was the final notice and the IRS has issue a lawsuit against me. So is it a scam for sure?

BEWARE!  Its a scammer calling you!The IRS doesn't initiate contact with taxpayers by email, text messages or social media channels to request personal or financial information. In addition, IRS does not threaten taxpayers with lawsuits, imprisonment or other enforcement action. Recognizing these telltale signs of a phishing or tax scam could save you from becoming a victim.
See: How to know it’s really the IRS calling or knocking on your door

This number is a scammer irs said to call this number to report those calls pretending to come from the irs. Treasury inspector General. 1800 366 4484