Got a cooking proble!!!?

I'm baking cinnamon buns for the 3rd time now and there still burning on the bottom and not ever ready on the top. I try changing it and put 2 layers of aluminum foil and put it on the highest part of the oven but it's still burning. It's very annoying and I don't know what should I do. The same thing happened with way foil. Can anybody tell me what to do next time so my rolls would not burn?!