I live in MA and have a small claims court case coming up. The Plaintiff (Midland Funding) claims that I owe their client roughly $500 in credit card purchases for online goods from Pay Pal. I have never heard of either Midland Funding or their client. I do not believe this is my debt, but they have my name and SSN. My question is what kind of proof do they need to prove this is my debt? Don't they need a signed contract or something along those lines? Also, the debt occurred in 2009. Isn't there a statue of limitations? What is the best way to defend myself without a lawyer?