This is a number used by the Skype computer phone service. I know because I called my house to check my messages and this is the number it came in on. The calls you are getting are probably from other Skype users around the world either trying it out or simply making a missdialed call. In any case it is not a number you can call back.
If somebody is harassing you, then contact Skype at http://support.skype.com/en_US/support_request? and enter an abuse ticket.
A recorded voice said my card had been fraudulently used, and I was to input my debit card number, expiry, and PIN so that it could be re-activated. I input made up numbers to hear the end of the recording. This is the second such call I've received, but this time the voices and foreign accent were different.
got a call from this number. they said that I could get my intress rate lowered I asked on what he said my major credit card. I don't have a major credit card just debit card. He said I owed 5000.00. I asked who does on what accnt. He hung up.