Got an IRS scam message on this number:1-844-551-0574 identical in sound and content to the call on 1-240-252-5164. Sounds like an electronic female voice. Poor syntax. Now there are two connected, definitely will report this.
This number calls my office about once a week and doesn't leave a message. From the other notes here, it sounds like this is probably a scam. If not, they're exceptionally rude.