I've been getting daily calls from this number for about a month now, always in the afternoon EST. They always leave a blank voicemail of them hanging up the phone. If it is indeed a debt collector they are barking up the wrong tree, and they aren't asking me to respond at all. I'm going to try to get the number blocked. BTW the caller ID on vonage comes up as NCC so I suspect this is Nationwide Credit Corporation of Alexandria, VA.