Consumer Redressal

I had parked my car on 17th April at 11:22 am in Parking (Secure Parking Solutions Pvt. Ltd. at Cyber Hub, DLF). While entering I read parking tariff, printed at back side of parking receipt, where it was mentioned that 0-3 hours = Rs. 40 and additional hours = Rs. 100/-. I parked my vehicle for 8 hours 37 mins and the bill that they given to me was of Rs. 640/-, however as per tariff plan bill should be Rs. 140 only. They charged me per hour basis. I argued that there is difference in "additional hours" and "per hour". I kept on requesting to let me go and charge only correct amount but person in-charge didn''t want to understand. After sometime involving an officer from DLF security they have given me a discount of Rs. 300/- and charged only Rs. 340/-. I need compensation for extra charges they billed, Wastage of time (more than an hour) and for mental agony and harassment (as I wanted to go home early to take my new born daughter to hospital