Complaint Review: Midland Credit Management inc

I had just recently learn that Midland Credit Management/Midland Funding LLC had posted a negative report on my Equifax Files and the others Agencies as well, this account they are trying to collect on was an account that was include in a federal Bankruptcy Court dissolved  by a Chapter 7 in 2003;  here we are in 2012 and they still want to collect on this T-mobile that was terminated at a non-contract basis where they wanted to collect on 4 years old handset and enforce or push on a two (2) years Contract on me after turning handset writing emails and regular letters informing them of my  termination of their services with them. I done all of my duties as they were required by their instructions and here come this dilemma after almost 9 years, what is going on here; hello?