Live in IL Heard of United Recovery in relation to VIP?

So I like many here took the desperate leap into a payday loan to help me out of a bad situation only to get into a worse one. I stopped paying (after paying the principal) changed my bank acct, and requested validation of debt. VIP never sent me one. I hadn't actually heard much from them at all but...now I get calls from "United Recovery" saying that unless I pay they are taking me to court. I ask for the validation of debt and not admit anything to them and they put me on hold and get the "manager". So after I spoke to them yesterday, they call my husband. They do not say that they are with "united" but explain all about the debt to him and that if I don't pay that I will go to court. Can they actually send me to court? I told them I want something in writing. They said once I arrange a payment that they can send me something, really??? Come on I know Im not the brightest but they are threatening to sue me and yet I've gotten nothing in writing. VIP said they did try to send me something. Ive never gotten anything in writing. Any advice???