Why did i get charged 12.71 for a song one iTunes that only costed 1.29

Did you buy the entire album instead of just one song? Check your purchase history.

Officially, all purchases are final, but you can try to get a refund by completing the Report a Problem form.

Get help with an item purchased from the iTunes Store, App Store, Mac App Store, or iBooks Store - Apple Support

I paid for one song last night i got charged 2 more songs wich i already owe and paid for i want my money back