2005 Dodge Neon Car won't start

Hello my car won't start the battery is completlt dead. We have replaced the battery a total of 6 times since May and have replaced the alternater 2 times. Someone said that this is a computer issue. I think that it has to do with something always on and draining the battery. On a fully charged battery the car will work for about 5 days then will be completly dead. I have an automatic trunk lock that is damaged and slightly open as well as the trunk light is always on when the car is on. I can't find the fuse to disconnect to the trunk to see if this is the problem. Any suggestions or help will be greatlt appreciated.