Has anyone ever had an extension request denied by BOA investors? Is there a way to turn it around?

I have an approved BOA shortsale. Have been working on it for some time and received the approval on October 30th. Noticed that the buyers name was incorrect on the approval and the buyers lender was requesting it corrected. I called, emailed, left message to the negotiator throughout the month of November to make the correction. On December 1st, I escalated to a manager my request and also mentioned I will now need an extension as the buyer's mortgage contact hasn't begun to process the loan. She said she will note it. On December 18th, I finally received an email from the negotiator making the correction and giving me a deadline to close by December 30th. That was two weeks (who was he kidding, he knows it takes longer than that to process a mortgage loan). I called him to discuss and he never returned my call until another escalation request was sent via email on the 21st. He called me on the 30th and told me he will now request for the extension through the 15th to allow the loan to process but he cannot guarantee if the investors will honor the extension. Today, I heard that the investors declined the request.