Questions on Worthless Check Charge?

I sent this once and don't see where it went.. so am sending again, because I really need to know what I am up against here..... several years ago-- about 2005-- I got into some financial trouble and took out several on line pay day loans. (Please save the lecturing on this, I am well aware how STUPID it was) when you are desperate, you do things you probably shouldn't. Anyway I took out several loans and got into a vicious circle as to trying to get them paid off. I was terrified as they threatened to have me arrested, to do bodily harm to me, my family etc. I finally called our local DA's office to see what I could do. They said to try to pay them back the best I could, but that legally there is no debtors jail etc. So as the "vultures" kept calling I made payment arrangements with them and paid them all off, or so I thought. Today, I was contacted by a woman who says that there is a law suit in her office and she is contacting me to try to get it worked out before it is sent to the local DA's office against me. She says it is for writing worthless checks... during all of my financial problems, there were several unathorized withdrawls that caused my account to go NSF... the bank closed the account. I paid everything back to the bank and thought I was cleared up-until this woman contacted me today. She never did say what office she was calling from and said I "should have" received a Affidavit in the mail, which I did not. She then proceeded to read me the charges that are pending against me and they are for a pay day loan group who says I still owe them $600.00. I kept all of my documents for several years and when I heard nothing from them, I threw them all out. So I no longer have any proof that they were paid. I have an appointment with my lawyer tomorrow, but am freaking out about this today. Does this sound legit? On one hand I am thinking it is another scam to try to get more money out of me and then on the other, if it is legit, I definately don't want to have any criminal charges against me. I have NEVER been in legal trouble..... 1 speeding ticket is it. Has anyone else dealt with this and if so, what should I be doing, other than what I have done?

Again, please do not preach on the devils of the pay day loan world... like I said I am well aware and learned that one the hard way!