My parent won't give me privacy?

They touch my iphone without my permission, enter my room without my permission.
When i go to school they read my text message and my facebook. They keep track and Monitoring my what i say, what i post on my facebook. They don't allow me to pot passcode to lock my iphone ( this make them easier to read my stuff!)

My cydia icon has gone, how can i get it back?

I was deleting themes and tweaks off cydia and it said to respring so i did, then it wasn't there anymore. Iv tried restarting it and turning it on and off a number of times but its just not there. I still have the theme and tweaks i had on before it had gone but now its just not there. Help! I have a iPhone 4s btw!

Added (1). Pressing the home button and the power button do not work.

What does syncing my iPhone mean?

I downloaded music from somebody's computer with there I tunes, does that mean they synced my phone to there computer? & if so does that mean they can see my photos/videos/voice memos?

ITunes not giving options for new desktop computer?

I got my laptop stolen and after buying a new desktop computer, I hooked in my iPhone to authorize the new desktop and when I open up iTunes, it doesn't give me any options on the bottom of the iTunes page (i.e. New Playlist, Genius, etc… ). Old songs that I've deleted years ago and old voice memo's from a year ago pop up on iTunes, but not new voice memo's (albeit new songs pop up as well). I can't create a new playlist as well, I can't do anything. It's pretty much what you see on my iTunes is what you get (only music).
Will I never be able to transfer my new voice memo's or create a new playlist until I buy a new iPhone just because my new desktop isn't the FIRST computer to recognize the phone I have now?

AT&T Cellular Data Usage Message! Urgent

My billing cycle reset on April 20th at midnight, so my current data billing cycle is from April 21st - May 20th.

I have an iPhone 5 with the 3GB data plan and unlimited Wi-Fi. I also have an app that monitors my data usage very accurately. I have not used any data except iMessages to my girlfriend and maybe two minutes max on Facebook. About ten minutes ago, I just received a text message from AT&T saying that I've reached 65% of my billing cycle. However, my data apps says that I've only used 0.7% of my allotted amount of data.

Is this an accidental mistake by AT&T or should I be seriously concerned about this?

Why did this happen?

My iPhone 4S screen won't turn back on

I dropped my iPhone 4S and now the screen won't turn back on but I can still hear Siri and calls being made to me and all that? I took apart my phone and installed another completely new screen and its still doing the same thing! How do I fix this?

Should I be worried about this situation?

So I had an odd thing happen tonight. A woman came to my door asking to use my phone because she was trying to call her cell phone since she tracked it down to my apartment building using the Find My iPhone app.
I didn't open the door all the way, and I just got my home phone and let her use it. She called her phone, but didn't hear anything and then gave my phone back to me. She apologized for disturbing me.
I went into the kitchen to make my dinner, and my husband was in the living room. He said he could hear her going from apartment to apartment asking for the same thing, and only one other person opened the door but refused to let her use their phone. She tried that same person a few minutes later and they did not open the door for her again.
I'm now worried that she might have been gathering phone numbers to call in order for either her or a group of individuals to break into apartments when people aren't home by calling them.
I live on the second floor of an apartment building where you have to get buzzed in. I live in the middle of a busy downtown area in behind a news station. There's only one door into my place, but I'm just scared I foolishly let someone use my home phone to rob me later.
Does anyone think I should be worried about this? Is there anything I can do to if this may be the case?

Thanks!

Added (1). Should I report it to the police or my apartment management?
Also, this happened about four hours ago, so is it too late to do anything about it now?

Added (2). I called the cops and they are going to have an extra patrol set up for my apartment, and they told me to talk to my apartment managers in the morning.
Hopefully this will help so I can finally go to sleep!