How to deal with irresponsible parents...?

I know this question is odd, but my parents are really irresponsible with money and paying bills. My Grandparents pay their mortgage...and the phone/tv got cut off last night because they only paid half the bill. Thankfully the internet still works, my Dad comes home from work after only a few hours of working and my mom doesn't work..because my Dad is supposed to be the breadwinner. I can't work, because I don't have a ride to work and we live about 5 miles from the bus stop...I'm getting really annoyed, becuase if they budgeted their money they would being in this problem. When I bring it up, they get mad and say I'm jsut being disrespectful and that I'm not appreciative of what I have. They barely put food on the table..how do I deal with parents like this..I graduate in a year..and then I'm out, but I know they will call me for money once I have a steady job. I just don't know what to do about it anymore.