Called me on my cellphone. No message left.

Keeps calling claiming to be IRS

IRS scam-ignore it and do not call them back. Block them if possible.
Report them:
https://www.treasury.gov/tigta/contact_report_scam.shtml

It was an automated voice message saying that it was the IRS n it said that it was my final warning that they were filing a law suite against me that i shoul call back immediately..

Same BS- IRS Scam