Uber India — Charged additional amount above my tarrif receipt

Address:	Visakhapatnam, Andhra Pradesh, 530001
Website:	www.uber.com/en-IN

I have booked an uber cab in hyderabad uber pool type for 2 passengers. The fare estimate and the tarrif receipt after ride shown are rs.46 but the driver had taken rs.80 claiming that i should pay the amount shown in his mobile. At that time i paid the amount he showed, but when i checked my tarrif receipt, it shows only rs.46.
Is the driver fooled me or the uber fooled me? I dont know, but i need an answer to this matter. Being a customer i have the right to ask for why i was charged in extra? I need a clarification i this regard.