How to get data plan back on to my iPhone without hard reset? Fast Please

My little brother got an iPhone for his birthday, and when he got put on the plan I apparently got bumped off of it. According to what my Mom's saying, when you add a new line, the Sprint Store Employees need to sort of rearrange the numbers and phones like slots, until it's "set up right." I have no idea what the heck they're talking about, and my phone really should've had nothing to do with this swap. We went to the Sprint Store, this one guy made a call, and he says the only solution is to hard reset it. No problem- but when I go to email certain things to myself, such as notes from the notes app, I can't because my data package is gone! I have many long notes and don't want to take pictures of them, I want to copy paste the text into an email.iCloud does not manage the notes app, and therefore isn't any help.

There HAS to be a way to get my data package back without a hard reset, maybe even from my own computer. Can someone who is well oriented with phones please help me, maybe even a Sprint Store employee/former employee?

Plug your device into your computer.
Turn off the device.
Hold the Power button for 3 seconds
Hold the Home button without releasing the Power button for 10 seconds
Release the Power Button but keep holding the Home button
Keep holding the Home button until you are alerted by iTunes saying that it has detected a device in Data transfer mode.

And after that just select "select files"