Your MCATs are just too low. Your application is getting pre-sorted into the trash bin by the computer (ie: no human even sees it) by many to most med schools just based on not meeting their MCAT cut-offs. After you get past the computer screening (and virtually all schools have one, whether they admit it or not), most schools will look at your most recent scores in making their decisions, but take notice of how many times you've taken it as well.
You need to figure out why you haven't had a consistent performance in your past attempts, and how you'll prevent that from happening again. Do you have to caffeinate/decafinate yourself during exam day? Sleep more? Meditate so you can focus more easily? Have you used a review course? Gone through at least four or five sample exams before the test? etc. etc. You should probably have a friend/admissions counselor/someone here help you figure out why you haven't been able to score higher in the past.
You have to realize-- you'll be taking three more exams that are similar in idea to the MCAT (though covering much more interesting material) during your med school and early residency years, plus tons of multiple choice exams while you're in med school. Schools will be troubled by your not being able to succeed on the MCAT after a large number of attempts, and you'll have to have some convincing explanation for your past performance. If you're in a grad program, you probably took the GREs, how did you do there?
In short, figure out why you haven't done well/consistently in the past before you start any kind of preparation. Somone here can probably help you out if you post more details about your past experiences.
