Where can I get a new door for microwave?

I have a Delongi Microwave/conv/grill with a broken handle on the door. I need a new door but Delongi website say they havent any. I love this microwave but cant use it now as the crack in the door is too bad. It is just over the guareentee so cant get it replaced. Does anyone know of anywhere that might do replacement doors? thanks.