Help with a refund admins please

Hi I just get charge today sorry for my english (im spanish student) , I just use musescore that was awesome for download sheets and play them in the videogame rust, due my bad english I dont notice about the auto payment. Im student and I dont even have money for food then I get charge with 50 dollars pls I need help i got charge with the money that I pay my school was my mistake but I need a 2nd opportunity.
Thx u
Vinc