Great pay, bad hours if under 18 - Avis employé Sales Associate/Cashier Target

They go way below the weekly hour limit for minors (40), I'm 17 and they give me 12 hrs/ week at most with only 4- 4.5 hour shifts (not really complaining about that), they said it was because I'm a minor yet they give people younger than me 20+ hour weeks. $11/ hr is great but with the hours they give me I've had to find a second job, I may be a minor but I have bills to pay too and $120-$150 every 2 weeks doesn't do much for me.