CMG Group!!!

So I took out a PDL with CMG Group in May but couldn't make the payments anymore once I got put on medical leave from work. I tried calling them and trying to set up payments to try and pay it off before it even went into default and they refused payment. So then I decided to go ahead and use PDL Assistance and so far they have done pretty good with everyone else but CMG refuses to take payment from anyone at all because they keep saying I have to pay them with a credit card which I don't have since I filled bankruptcy a little while back. So now, they have hired a lawyer and hired from this company called CDR someone to represent me in the case too. Well this lady from CDR calls me and tells me that they are filling a case against me saying that I took out this loan with no intention on paying it and intending to commit fraud on them. She said I can keep it out of court which I agreed to but then she told me that I owe them $650, I asked how that could be when the loan I took out was only $200 + $60 for a fee. She then goes on to tell me that the original loan document that they have say I borrowed $600 and that they are mailing them out to me for proof that I did borrow that much. So I agreed to set up payment for the $650 even though I really don't have the money to make the payments they want every month but they won't work with me, and they add a fee to every payment. The thing is I know that I didn't borrow that much money from them, I have the original loan documents they sent me when I first took out the loan. When I tried to tell them this they just told me it was a crime to falsify loan documents and that mine were fake.