Consumer Redressal

Last Sunday (7th June 2015) i bought a bottle of Cold drinks form SUR PARK. Kolkata -75 in cash. Please find the below details against the purchase-- Name of Shop: GARDEN CAFE TAKEWAY Address: 1050/1.SUR PARK. KOL-75. Visit#: P-24188852 I had purchased a bottle of Thumps Up 300ml pet bottle. MRP marked on the top of the bottle is Rs 35, where as they claim Rs40 from me. Request to please let me know if price can be more than the MRP anyhow. I can submit the bill if require. Your earliest response will be appreciated.