Ola Cabs / Ani Technologies — invalid and wrong billing

Address:	Gautam Buddh Nagar, Uttar Pradesh, 201305
Website:	OLA

Hello,
Yesterday(27/05) I booked a cab from Airport Terminal 2 Delhi. At the of booking the amount which was showing Rs.629, however when I reached my destination, they charged me Rs. 929. After asking from the customer care they said there were Rs.300 charged for Airport parking. I wanted to know if there are some charges then why it was not showing at the time of booking. Now I talked to Mr. Vikram Singh and he said we cannot refund your amount. This is something not acceptable from OLA. As this is a cheating. You cannot charged any amount which is not told at the time of booking. Please tell me how you will take this case or should I go to Consumer court for this ?