Thomas Cook thieves at New Delhi Airport

I came out of aircraft at New Delhi airport and saw some Thomas Cook counters for currency exchange, I needed just Rs. 2.00 for making a local phone call at a PCO, I didn't have any Indian currency. I approached a Thomas Cook counter and asked for $10 exchange. The guy said he doesn't have change. So I said keep the change give me the rest. For $10 he was supposed to give me Rs. 434 instead he gave me Rs. 400. Rs. 34 isn't "change", a family can eat whole day in Rs. 34. These people sitting at airport are thieves and make use of travelers urgent need for exchange and deliberately don't give the right amount of money. Basically, they start robbing you even before you step out of the airport.....this is how your India trip starts.