Who called from 5129943436

Message on Phone, This is IRS and this is the final notice on a taxes owed on IRS case #####. This is urgent, call back immediately to settle debt.

This is clearly a scam, the IRS would not contact you by phone with a  fake digitally created voice.  You would get officially endorsed mail correspondence.

Report it: https://www.treasury.gov/tigta/contact_report_scam.shtml

I received a voicemail from this number also. Womans voice saying the IRS was preparing a lawsuit against me and I needed to contact them for information about it.

I too received a call from this number with the same message you're all talking about at 4:25 this afternoon. Clearly a scam and do not proceed with what they are claiming.