I received a call from this number which is located in Oregon.  They were rude and harassing me about an alleged debt.  WHen I asked for for proof of this debt they told me they would sue me for some amount.  I hung up.  Three minutes later I received a call from North Carolina asking for the same thing.  I asked for a physical address to which I could send a written letter of dispute, the woman hung up on me saying "see you in court".