2nd mortgage charge off

first off, due to financial situations caused by the economy in late 2007/early 2008 causing my husband's former place of employment to go bankrupt, we got behind on payments, and eventually had to hire an atty, to file for bankruptcy, which was paid off in december (this is important to the story).....my husband finally obtained employment and we worked with citimortgage (1st mortgage) and got everything caught up and chase (2nd mortgage) was given a big chunk of money ($5000.00) and a payment arrangement set up with loss mitigation for 6 months to catch up the rest making almost double mortgage payments (payments were 1345.00 month). they were given the $5000.00 in august of 08 and the payment arrangement started in sept 08 for 6 months ending feb 09. in the middle of the arrangement with loss mitigation, we finally paid our lawyer off and he filed our bankruptcy petition with the court in december 08. we continued making our payments, on time, never late....and in feb 09 after our last double payment per our agreement (a contract we had to sign with chase on our repayment plan), i called to check with chase that everything was in order, that time i started on my road trip to hell.....basically in a nut shell, they stated that because we filed for bankruptcy, our agreement was null and void and they didn't have to abide by it, our money was not applied to the past due payments and current payments (when we gave them the $5000.00 it was mostly used for foreclosure fee, atty fees, etc and them some of it for past due payments). i have no idea what they did with the $8100.00 that was sent to them from sept to feb or the payment they got in march. i get the run around everytime i call, regardless of what they are doing to us, i made my payment in mar 09 (on time) for the normal amount 730.10 and it was accepted, when i went to make my payment in apr 09, which my bankruptcy had be discharged by then, they refused to take my payment and said my account has been closed. the customer service rep' at the bank tried to help me and she finally reached someone who told her that my mortgage account was charged off....no one will tell me anything and i have not received anything from chase.....before we started our payment arrangement with chase, we were 8700.00 behind (total, that included late charges, atty fees, foreclosure fee, and past due amounts), so if you deduct the $5000.00 from the amount we were behind and the 3700.00 we paid along with our current payment, we were caught up and on schedule, not according to chase, they still showed us 3700.00 behind.....even though we kept up with our payment arrangement, and when asked where our money went, no one can tell us anything.....i have all my receipts where payment were made....do i have any recourse? what can i do to get this straightened out.....chase wont help me and i am down to my last strand of hair.......