Iphone Problem that Involves io7 and software updating

I updated my iphone 4s to ios7, but my dad told me after i already started not to, and he would be really mad if i did. I just couldnt tell him because I didn't want to get in trouble. Its asking me to activate my phone? Someone please help me return to ios6 and just reactivate my phone! Please!

I'm sorry I just update my iPhone 4 with ios6 to ios7 and there's nothing you can do to return and the old one which is iOS 6
Sorry once you have update is done