Who I have the same questioned this topic

Recently (By recently, I mean a month ago.), my mom, dad, and I got phones. My parents got Lucid by LG and I got an iPhone 4S black originally (it was used so we got it for 140-160 ish?). We paid $500 dollars on the spot on the Verizon stand at the mall. But a week later, my aunt wanted an iPhone and she was planning to get black, so instead we compromised that we'll trade phones and I'll get the white so she'll get my black. She paid for it, not my mom, she did. The iPhone she got was new so it was about $200. All iPhones are 16GB.

But that's just a little background story. Now for the real question is.

My bill is $500 dollars and I don't know what I did to get it to that.

My minutes: 37 out of 700.

Messages: 801 of Unlimited

Data used: 0.082GB of 2.000GB

I very seldom use 3G and the only time I use 3G is when my wifi keeps going on and off.

I rarely use Safari and I have only went to about 5-10 sites.

All my apps are free.

The guy told me our whole family plan was $140 total for all 3 phones. (Family plan.)

It's just $500 for MY phone.

Anyone willing to try to tell me what's wrong?