If the ios 7 messes up your phone would apple give you a new iphone?

So i have the iphone 4 and i updated my phone to the ios 6 when the ios 7 came out because i hate updating my phone and when i was updating my phone to the 6 it just updated the 7 too( and i think the ios 7 is so stupid!) but every since then i haven't been getting a messages from other iphones i can get messages from phones that arent iphones but if its an imessge icant get it. And it doesn't tell me if someone kik me or of if i have anything new on facebook or instgram or ask.fm lml sorry its alot, so my question is if i go to the apple store would they be an able to give me a new phone or would they be an able to take the ios 7 off? Please answer those two questios its really important.

You can only get a new one free if you still have a warrenty

For a limited time only, Apple will let you downgrade. You can do it yourself, just click the link below

Answer for you problem

IOS 7 won't mess up your phone so no worries

It messed up my phone, a few minutes after I upgraded to ios7 my phone completely froze and now its just a blank screen.