I had a issue with Midland funding before. I sent them a debt validation letter and they asked if I had a lawyer and what there number was. In response I sent a even more forceful letter to them and finally they deleted the account from my report.
Midland is just ridiculous. I offered to PIF ($151) in exchange for deletion. No response yet.
It's over 6 years old, so it's definitely got some age to it. I'd try a PFD.
Thank you. PM sent.