I would wait a little bit longer and if it still doesn't come i would start recording your phone calls you have with the Xbox 360 supervisors and gathering up as much evidence and proof and help as you can.

Then file a lawsuite and see how much cash you could get off them, because if what you say is true you are being treated not only unfairly, but unlawfuly. They should be responsable for losing your elite, and if they don't provide what THEY lost they need to pay.