I'm sorry you're having such a tough time with the test. We're happy to help however we can. We need a lot of information / detail from you in order to advise you.
How have you prepared so far? What materials have you been using?
What were the Q and V breakdowns of your score? How did you do on essay and IR?
Read this (and follow the links within this article to other articles); have you been studying in this way?
http://www.manhattangmat.com/blog/index ... -the-gmat/I'm guessing not, so tell me how you think you need to change what you have been doing in order to do what the above article describes.
Next, use the below to analyze your most recent MGMAT CAT(s):
http://www.manhattangmat.com/blog/index ... ice-tests/This process will take at least an hour! Figure out what you think you should do based on that analysis. Then come back here and tell us; we'll tell you whether we agree and advise you further.
You don't need to come up with the perfect plan, but you do need to try to figure out what's going wrong and how you think you can get better. You literally need to learn how to analyze your own work, so we're going to make you do it here to learn how to do it (with our guidance!) :)
Edited to add: ask your admissions question in our Ask An Admissions Consultant folder. I've always heard that the schools will take your highest score, but I don't know whether that changes if you've taken the test 5 times.