Employer refuses to pay me?!?

So my friend and I signed up for a babysitting job over the summer. We were babysitting two kids for 9 and a half hours a day five days a week for a total of 125 dollars per week. Then our employers started asking us to do household chores and were exremly rude to us on top of it, so we decided to quit. I quit in the middle of the week I was supossed to be working on a tuesday night, and I offered to work the rest of the week so they could find a replacement but they were disrespectful and rude to my parents and I. I waited a week after I quit to get a paycheck and they never sent it, so i talked to them and they were rude once again, and told me that they refused to pay me. I am 15 years old and no contract was signed but the payment of 125 dollars a week was agreed upon. Is there any way I can get them to pay me, legally? Please help, I feel they are acting unjust and unmoral.. expecially to a 15 year old..