"Offer" scam by PVR Lulu, Trivandrum

Please ignore the flair. Currently there is an offer running on the PVR application, where on adding a ticket booked on the app to google wallet, the user is eligible to claim a free small popcorn. However, today when i went to claim the same at the counter of PVR LULU trivandrum, they stated that it was only applicable on purchase of another item from their menu. Trusting them, i purchased a bottle of water, however while waiting for the bill to be generated, I happened to go through the terms and conditions out of curiosity, however saw no such condition for redemption. Confronting the staff, i got excuses such as that was the offer conditions, and then that it was a technical glitch in the system etc. Eventually after much argument, they refunded the money for the water bottle. Do keep this in mind in case you decide to use the offer yourself.