Canon powershot a510. my cameras lens wont go back in........its just out.....it makes a noise as

Question

my cameras lens wont go back in........its just out.....it makes a noise as though it wants to go in but it cant.....see what had happened was that it fell on the lens.....the lens was bent half way in....i pulled it out cuz i thought it would help but when i tried to use it.....it didnt work anymore....i cant even view my saved pics or anything