1. I just learned to deal with it. It's helped me to not be so attached to my phone, something I'd always wanted anyways. I will say that my keyboard will/would(it hasn't in awhile) just freak out, like I would hit one button, and it would put in three random letters, and just send messages and ... all kinds of annoying. Lock button still doesn't work, charging it can be annoying, as it takes a couple plug-ins before it realizes it's getting some charge. Otherwise, it's a phone like any other.
2. You said your phone doesn't work anymore ... and a bricked phone is really just a paperweight :/ It sucks, I know. You're stuck with no phone until you activate an old one again or pony up for a new one.