Crevier Maintenance Plan
I had something similar happen to me right before Christmas (2010). I purchased a CPO 2007 335i and also financed the extended maintenance plan. When I recieved my statement in December I noted a credit of $2000 and I called to inquire and they told me that "I" had cancelled the plan.
I called my SA and within an hour a finance guy contacts me and states that they should not have sold me the exteneded maintenance, because the original owner had already purchased it. He basically told me "Merry Christmas".
I recently had a service visit to repair a DTC error and I confirmed with my service advisor that my maintenance and CPO plan is effective until 2013.