I too faced the same problem. The dealer sent the representative to my place based on my request to tata photon customer care. After I bought the photon, he gave me a number to call for activation. But since that day I am trying nobody picks up the phone.

To make it worse its extremely hard to get to Tata photon cutomer care. They are always busy.

Delaer Firm:
ARP Teleservices
71-A, Taimoor Nagar, New Friends Colony,
New delhi-65, Near Ashram Chowk
Mob: 9212281968, 9213786175