I got a call from this number at 5:54pm yesterday then just a bit ago at 8:23pm (it's 8:56pm now) and there was no voice mail left either time. I don't pick up on numbers I don't recognize and promptly blocked it since I've got that feature on my Verizon account.
Received call today and didn't recognize the number so I let it go to voice mail. They left no message. Caller ID says it's from Cicero Research. I checked their web site, and it says that they're a marketing research firm. One of their customers is Citigroup, and if that's what they're calling about, I'd be glad to tell them to shove Citigroup where the sun doesn't shine! I've had very bad experiences with Citigroup (lies, cancelled money transfers that I needed to pay bills, and more lies), and I refuse to deal with them (Citigroup) anymore.