I don't know fully what your case is, but I took the LSAT twice, and got 158 and 167. My first choice was USD full-time, and applied with the option of deferral to part-time if not admitted to FT. About 3 weeks ago I get rejected from full time and was offered a part time decision.
I consulted a family friend, who knows the dean of the law school at USD, to inquire if my application was reviewed correctly and fully (because of the multiple LSATs).
It turned out that USD "overlooked" my 2nd LSAT, and within 3 days they sent me an official letter of acceptance to full-time. And today they just sent me a 17k scholarship!
If you really have your heart set on a school, and you have been rejected or deferred, it's definitely worth a shot to appeal, or at least inquire to see if your application was reviewed correctly. Adcoms have 1000's of applications to review, and it's not impossible that there are errors in their process.