Dear ____________
This is to inform you that from this day forward, I am no longer responsible for any debts incurred by ____________________ (name), a.k.a._______________ (name).
The above captioned account is currently held in my name. In order to avoid any potential problems, I am requesting that you close my current account and open a new account solely in my name.
Thank you for your cooperation in this matter. If you require my signature on any forms, please forward the paperwork necessary to my office, and I will return it to you promptly.