IPhone 4 off button is stuck?

Well I went to turn off my iPhone 4 and the top off button would not push down at all it won't even move what should I do and my dad tried pushing it down but that didnt work eaither Please Help!

Only options you have is to repair it, which will probably mean it will be sent to a warehouse where techs work to repair this kind of issue… Or buy a whole new phone.