This is an IRS phishing scam. Left a recorded message on my voicemail saying the IRS is filing a lawsuit against me. Reported it to the IRS. Do not respond to this number. It's a fraud!
Its a scam and its all over this board. The caller will tell you owe overdue taxes that you must pay right this second. She will demand that you give her your bank account number or credit card number to pay those taxes to avoid immediate arrest.
She does not work for the IRS. She plans to spend all of your money. You can safely ignore her.