Received call claiming  irs

Yes, it started yesterday. I blocked them in my cell phone and found a new message again today in my blocked message.
They leave a recorded message on the voicemail of which the beginning is cut off. A woman says the phone number twice and then says thank you. I have no idea what they are claiming to be.

A woman in a recorded message says it is the IRS - I want this reported as a fraud call.

Started yesterday ... Twice ... Again this morning. Now blocked. Recorded woman claiming the IRS is going to sue us.

The IRS reminds people that they can know pretty easily when a supposed IRS caller is a fake. Here are five things the scammers often do but the IRS will not do. Any one of these five things is a tell-tale sign of a scam. The IRS will never:
Call to demand immediate payment, nor will we call about taxes owed without first having mailed you a bill..

Demand that you pay taxes without giving you the opportunity to question or appeal the amount they say you owe.

Require you to use a specific payment method for your taxes, such as a prepaid debit card.

Ask for credit or debit card numbers over the phone.

Threaten to bring in local police or other law-enforcement groups to have you arrested for not paying.