They said that they took steps to lock my account and to reply press 1. First of all, I couldn't hear what account they closed, and it seems very suspicious.

This is an intentional hang-up call used to find out if anyone is home. If you answer it hangs up. If you call the number back it has a recording that says "Thank-you" and immediately ends the call. I assume its an autodialer used to find out if people are home or not. This is dangerous. What's next? Burglary?

stated that I was involved in fradulent activity and that he had my ssn and that I needed to call him before I go to court? Sounds like a scam he wanted me to confirm private info over the phone.

called, I did not answer. left no message. tried to call back. always busy. i see this number all over the web. What is it?

Undesirable types, usually businesses with no real purpose other than to harass others, use this number to appear legit. Go to babytel, get a softphone, then you can simply block these types and never hear from them again. And they are too stupid to adjust their tactics, i.e. they just keep assuming that they are effective.

Calls numerous times a day, nobody there when I answer and never leaves a voicemail. Who is this?

Called my office phone twice and hung up within the past hour

asked if I had a visa ending with specific numbers. I asked who he was and why he wanted to know. Mumbled something, then said he wasn't selling anything that I was a winner.....cut him off and said NO and don't ever call me again. Think this is one of those credit card scams.