Please help me, I neeeeeed help!!!!!!!!!!!!!!?

sorry its so long. I am in a school club, I am the treasurer and my twin brother is a chairman. He is about 1 in 6. I keep track of the money which is my job. We have a speaking event and apparently the president didn't get ready so my brother informed the group of what we needed to do which I pubically supported him on. He wanted to send out another e-mail a day later which was outstepping his boundaries. I told him not to and we argued about it for 15 mins. He wouldn't listen to me. Then today we got into a screaming match because he thinks I failed when event planner is NOT my job. I am so busy and don't have time to call the president and say what do I need to do, he needs to call me. My brother thinks this is my fault because I am on the top four when in reality my job is to keep track of the money. Thats is why our club constitution delegates responsibility instead of us always intrepeting it. We got into a huge screaming match and my dad refused to hear what happened and blamed both of us when I was trying to explain to jimmy its not my responsibility to event plan and its over stepping my boundaries. My mom didn't stand up forme and my brother didn't actually state what he believed beacuse he knew my dad would tell him he was wrong. Now were all in a huge feud over this stupid club. My dad won't listen to me and expalin to my brother why I didn't get involved. Now I am in trouble too when I never even started this whole mess. What can I do. He refuses to hear about it and everyone refuses to hear my side of the story even though I should be able to explain the whole conflict not just what they heard.. I have tennis for 2.5 hours after school everyday and 2-3 hours of homework, I can't be dealing with this now... What should I do?????