Airtel Prepaid Connection — sim card rejected
I have secured my nokia mobile through pin code to hide access from a small child who is my nephew. When the nokia mobile was switched on it asked for entering PIN no three times. But every time a wrong PIN number was given. So it asked for a puk number. When I give a puk number it asked me to enter new PIN number and reenter the pin number. But it was not worked and my mobile could not be opened. When I give another PUK code it again asked for entering and reentering the PIN number. after that my SIM card was rejected. What should I do?