Meru Cabs — Unfair amount for booking taxi

Address:

Airport terminal 3

I have booked a meru cab from Delhi airport terminal 3 to Nasirpur. The counter staff there told me that amount will be 500. At the same time Uber showed an amount of Rs 469 to the same destination. As there is not much difference I picked up meru cab. After reaching the destination the driver told me to pay Rs 674. When I questioned about the difference in amount told by the counter staff and him, he told that it's metered bill. Really looted me by saying the less amount first