A sun with a black sky?? Try a moon with a dark blue sky and stars. Also make the building 3d. Add some detail too... like rocks and stuffm because they are still classed as the background (I think).
I guess they may be busy right now? Though it is probably automated. I myself paybyphone but use a telephone which gives me the pin on call. Wait anotehr hour or so and if you get no txt then send a letter to jagex.