My parent's don't support me

I'm a fan of Kpop and especially when they hold concerts I want to be there....I finally have my money to buy a ticket but there are many expenses in school so my mother said that I should firstly paid my expenses before the ticket....but then the sale held....I said to my parents to buy me a ticket because I paid already my expenses....but they didn't gave me any money....I was so depressed until now I don't know what to do my idols are getting older and maybe this is their last concert....I was so dissapointed on myself because I paid my expenses rather than my ticket....Idk why my parents don't support me being a kpop fan....I was crying,crying and crying....I dont know what to do.....Is this bad? My mom said that she will buy me a ticket...but she didn't.....I was so sad and depressed...Why? Why do they do that?...I'm so depressed right now...