"unavailable" caller & hard reset problem

[Odeezie]

OK I've spent a few days searching and so far I wasn't able to find anything...

I have two problems, so far...

1)So my phone all of a sudden started to come up as "unavailable" for some people when I'd call and vice versa. (note: this is NOT the same issue as the "unknown caller" deal with the TP's caller id) It seems to happen for some people and not for others randomly so I can't really see a pattern in it. Also, right when this happened, whenever I call my voicemail, instead of logging in it acts as if I'm someone else calling my voicemail (I can basically hear my greeting). As a side note, I did not install anything before this started happening.

I wasn't able to figure it out so I tried to do a hard reset (first time) in hopes of solving the issue. Well, after the hard reset the problem is still there. Any ideas?

2) after the hard reset, I honestly feel like I'm getting WAY worse battery life, believe it or not...I've had the phone since early november so I'm pretty used to how much battery life my phone usually gets. Has anyone else exeprienced this? Any suggestions on what I should do?
fyi. I'd prefer to stick with a stock ROM.