What's wrong with my Iphone 5c?

Right so my iphone is showing nothing but a blank clear screen. I can't turn it off nor press home button. If i press the home button long enough it jumps to siri and then jumps back it also shows the battery amount too. I can turn it on silent and off silent but it won't work please help

Go to the Showroom

Go to the place and ask them. I'm getting me a new phone today I think I want to go back with the iphone and i'm get my number changed. It won't be a 5 though! I use to have a 5 and I didn't like it.