Why does my bill come up at 190 a month in sprint?

From what I remember my plan was suppose to be 80 a month what the heck is going on did I do something wrong? I got this phone a year ago it's a two year contact iPhone 5 I was a new customer.

There are government taxes
regulatory fees
telephone access charges
then did you call from city that sprint doesn't have coverage
that roaming fee
did you call or recivice any international call

Check the monthly price of the main plan, the cost of any add-ons you've ordered (prepaid data allowance, additional gadgets), and the cost of your activity (how much you used in excess of your allowance). Using a lot of cellular data can add up fast.

Once you've got it figured out, either change your plan if you're over-provisioned, or change your ways if you're over-using.