I got scammed by Rocket League

So I won an epic crate in the game somehow. I looked at the crate via the "manage inventory" menu, and the crate was full of cool-looking stuff: skins, cars, paintjobs, wheels, etc. There were about a dozen things and they looked awesome.



Of course I found out I needed a key to open the crate. How do I get a key? Gotta buy one with real-life money. Hmmmm, well how much is a kay? $1.50. Okay... that seems reasonable for the dozen or so things in the crate. I like Rocket League, it's a good game, and it wasn't super expensive.... okay, I'll pay an extra $1.50 for all of the things in the crate.



So I paid, and guess what... I ONLY GOT ONE OF THE DOZEN THINGS IN THE CRATE. And it wasn't even a good thing, it was a crappy paint job. I thought I was buying an entire crate full of stuff, but NOPE. It was just one thing. I want a refund. How can I get one?