PVR Cinemas — Cheating at PVR eatery

I Had visited PVR Sangam on 19 DEc at 1910 for the AVATAR show. ordered a tub popcorn from PVR eatery. a CARAMEL and CHEESE Mix. I found the tub was only cheese and 4-5 popcorns of caramel. If this is the silly way of cheating customers and fleecing PVRs idea, or the individual serving I would like a redressal and would like to avoid PVR as much as possible.