<prompt> Human: Debt Collector calling my sister claiming she owes 800 for a home phone from 2000. Says the debt has been on her credit report since 2013. But when she checked credit reports nothing of the sort shows up. I told her to ask for his address and inform him that she is contesting the claim and that she will be sending him a notarized letter contesting the claim and requesting proof that the debt is hers. She called him to get the address information and was told that she had no choice but to pay unless she wanted it filed in court today and that she can only contest it in court. Assuming she even does owe this money from 18yrs ago, which she doesnt, wouldnt there be a statute of limitations? This entire thing sounds very fishy to me. EDIT-- Sister just told me that he had her DOB, SSN , and current Address. Could this be ID theft?  <response>: she had no choice but to pay unless she wanted it filed in court todayMajor red flag, hang up, block their number and dispute the charge with the three credit agencies. 