LG Ally lost lock and home button doesnt work

[BaileyBee]

So I have a droid ally and im seriously getting over it. ive had atleast 3 or 4 new allys. Now my phones sound doesnt work. I can get an incoming call but when I answer it there is no sound and same for outgoing calls. It also doesnt work on my apps like if I'm playing a game and on my music player. So I was planning on going to my moms ally but her lock dissapeared and her home button wont work anymore. Ive gone into the settings and tried to change it to a completely different lock like the pattern or the # code lock but none of them ever come up after turning the screen off. What can I do to fix it?