I got a call from this number on August 13, 2009. The guy left a message and said he was Nick with ProudDomains.com and wanted to talk to me about some of my domains that were expiring. (None of my domains are expiring any time soon.)
I called back and the greeting message said "Thank you for calling the Billing Management Center, your hold time will be 6 minutes." I'm far too impatient to wait 6 minutes just to bust a scammer, so I hung up.
Seems fishy to me. I would just log on to my account and handle issues over the web and not risk giving personal info to these people.
I spent the past two hours calling 1-480-366-3333, VISA and GoDaddy before I came to the conclusion that they were legit.
VISA essentially said that scammers are revealed when they don't give you the service you paid for. Well, after giving my credit card number to 366-3333 (yes, I'll admit I was that stupid), both GoDaddy and who.is confirmed that my domain had been renewed today and for the amount I was told it would.
The customer service representatives do represent a ton of different websites, which is why they are vague in their description. It's also what makes them seem super sketchy.
For those who are skeptical, just call the number listed on the GoDaddy website and deal with account issues from there. It's common sense and sure would have saved me a heck of a lot of time, fear and paranoia.