Consumer Redressal

Restaurant 5 Spice charged me for a cold drink more than its MRP. And the cold drink was served in the bottle itself. The bottle was opened in front of me and i had seen the MRP. i came to know about the price of the cold drink price after seeing the bill. The price of cold drink was Rs. 50. And on asking for explanation about why so much high price they said it was serving cost. I din\'t understand the costing of so much high costing. I want an explanation for this high cost. Why pay so much for a cold drink which cost just Rs. 13. And the drink was served in front of me.