Sounds like something my husband would do!
He got ahold of some computer software, where you can record a sentence, and then play it as a "computer generated voice".
He did that and then called me, held the phone (a number I didn't recognize) to the computer and played it. It said, "Your bank account is overdrawn $2,500. Please call (insert name of bank here) at (insert number here) immediately to resolve this critical problem."
I freaked out and called him instantly. It wasn't until he and all the firefighters in the room with him started cracking up laughing that I got pissed. I felt like an idiot.
To this day, he still calls me using that stupid voice, but he knows better now and usually it'll be telling that I'm great and how much he loves me.