The Confuseing World Of Parents !

so today without fail has been another boring day...with out the sun :/ idk when im going to take all of the test so i can get my perment.my mom dosent want to pay for it witch kinda pisses me off.i know all the materal and she couldent care less... but oh no when my brother wants his perment shes all open ears and putting in the pin to her visa card. i would do my best to pay her back,shes the one who wont let me drive without my perment and now i cant even get it wtf ? can someone explain this too me ?