Question about My tax, Please help?

I made 5,747 tax out of 2 jobs. I guess they combined the 2 of them ( maybe i should of gave him one tax paper at a time ) . Anyways, i only getting back 1200 bucks back. or 1300 bucks or under 1200. I claim myself and no kids. But that doesn't sound right to me, what do you think? I think someone did my taxes wrong, i should of least got back my guess under 3000. So what are they saying, they took over 4000 bucks back, where does that go? I thought tax time was suppose to be a good time, obviously its not in my case lol