BSNL
Unwanted "Caller Tune"
Mistakenly I had set a caller tune on 2/6. Then I call to customer care on 2/6 and try to solve the problem. He told me to send a message "NCOPY" to 56700. I had sent the message on 4/6. And a reply comes saying "INVALID OPERATION". 2 days later I had again called to customer ...