If you bought them in a shop, that's unfortunate, but also the risk you take, even though the product shouldn't fall apart.
If you bought them online, then you can return them and ask that postage that you paid originally is refunded (which is perfectly legitimate and the retailer is supposed to refund that), which means you end up at a loss of about a fiver.
Yes, I know you are 17 and don't have a great paying job, but your options are do that, and take a small hit or sit there and moan and get no sympathy and no return. Have you even spoken to the retailer and sent them the pictures you have posted on here? That would not be a bad place to start.