PVR Cinemas — overcharging price for 650 ml pepsi

Address:

Mumbai City, Maharashtra, 400049

Pvr cinema at phoenix market city near lbs marg, kurla west charged us rs200/- for 650 ml pepsi on 14th july 2017. Normally 650 ml pepsi is priced at rs25-30/-. Charging rs200/- is approx 10 times at pvr. It is insane and unethical to charge so much price which is jacked up 10 times.
Both on bill as well as paper cup, no where quantity is mentioned. When enquired from manager, mr suraj said it's 650 ml but due to gst, qty is not mentioned.
I asked him to write on paper cup and bill that qty provided is rs650/- for which he denied to write anything. I managed to take photo of mr suraj at pvr. Movie was jagga jasoos, time 6:55 pm.
I am writing about this incidence so that people as well as government knows how citizens are fooled by improper mal-practices.