Hi rajiskrish,
Short-term GMAT 'boot camps' can sometimes be problematic - while you might gain some exposure to new techniques and/or knowledge, it takes time and repetitions to properly change YOUR habits and how you 'respond' to GMAT questions. Thus, if you're looking for a quick way to pick up a significant number of points, then you might not actually get that result from a boot camp.
Before we can discuss how you could best improve your current 'ability level', it would help if you could provide a bit more information on how you've been studying and your goals:
Studies:
1) How long have you studied?
2) What study materials have you used so far?
3) How have you scored on EACH of your CATs (including the Quant and Verbal Scaled Scores for EACH)?
Goals:
4) What is your goal score?
5) When are you planning to take the GMAT?
6) When are you planning to apply to Business School?
7) What Schools are you planning to apply to?
GMAT assassins aren't born, they're made,
Rich