Same thing, although my phone call was from 213-337-2559 - they wouldn't give me time to discuss the offer with my spouse and said it was a "live" offer. They did have my IHG rewards number and point balance, so it seems like they are legitimately connected with them somehow. I didn't bite but did keep them on the phone for 20 minutes.
Don't waste your time!! They claimed to be from IHG (Hilton hotels) and ultimately asked for my CC info. I wouldn't give it to them and he made it seem like I was being ridiculous by not trusting him. They had my name, phone number and address but nothing else. They were offering a 4 night stay at select major cities for $249 but I'd have to pay up front and they would send me a "verbal receipt" which didn't sound legit. They wouldn't send me an email with information and pressured me that it was a first come first serve, so I would miss out on their offer. Complete crap but it can seem promising at first because they do a survey and want to "reward" you for it.
Phone says +17038869880 not russia. I recently stayed at Holiday inn and got an IHG account. Google voice flagged the call as spam so it didn't ring through.