Same as Chuck described. Chuck nailed it -
Called back from another number. Got a recording that I can get a $100 gift card because I visited on of their affiliate websites. Definitely a scam. Block this number.
Same here. They called my cell. I called back from my land line, with *67 on my side. I hate these scammers.
The scammers impersonating IRS agents, I just keep calling them back until they disconnect their line. Of course reporting them does absolutely nothing, because our authorities are impotent. But I feel calling them back until they disconnect their line is actually helping.