This is a phone number for an IP Relay company. If you know someone who is deaf or hard of hearing, they could be calling you.  Anyone who has your phone number COULD call you thru IP Relay. IP Relay is intended for people who are deaf or hard of hearing to call people who aren't. However it's become somewhat trendy for immature people to anonymously prank call their friends, enemies, etc.  Lots of obscene phone calls are made this way.

It's also exploited by scammers from foreign countries who call small businesses and people selling things thru Craigslist, newspaper classifieds, etc.  The scammer tries to get your email address and then emails you with the details. I think they try to pass a fake check, money order or Western union payment for larger than the amount of the item and want you to send them the money. Be very skeptical and if it seems at all funny DON'T COMPLY! Businesses are supposed to take relay calls because to not do so would be discrimination, but they certainly don't have to comply!  If you received unwanted relay calls at home or on your cell phone be nice to the operator & just HANG UP!

Phone: (319) 892-0177
Type: Land Line
Provider: Mcleodusa Telecommunications Services
Location: Cedar Rapids, IA

This call was placed at 1:18am. The Call was caught by Callwave Mobile

relay call for 800quantity sparkplug order bogus cc info on generic name

some chick knows my name and keeps calling like 12 times in a row 3 times a day with some message that doesn't make sense at all. if she were right in front of me i'd punch her so hard she couldn't ever use the phone again.

I received a call from this # which, indeed, ended up being a Western Union scam. I didn't fall for it, but it is as exactly as you have stated.