<prompt> Human: Hi, I will try and give as many details as I can. My mom is in a really bad situation. A doctors office is charging her 2000 doctor from 4 separate visits in 2011. She has not received any mail or emails from the agency receiving the bill we moved in 2013 but would have defiantly gotten our mail . She just received a letter claiming she owes the money by a collection agency CMRE Financial Services. Shes contacted the Doctors office and they said they were trying to mail her, this is the first time that she has heard anything about owing this money. The Doctors office is saying that she has a balance of 0, we assume that means they do not have record of her owing. They are going to send her medical records hopefully with an Itemized receipt. The collection agency only has the dates of service but they do not show price or time. This is a really hard situation for us and if we dont pay by next week then it will severally hurt our credit. Please help any advice would really help. If you need anymore info to give advice I will do my best to answer. We dont know if we should pay it to make sure her credit doesnt take a hit or what.  <response>: Make sure it is owed before she pays it. They need to prove it is owed. Why you say if we dont pay by next week then it will severally hurt our credit?You should look up the statute of limitations in your jurisdiction and can also post to rlegaladvice. 