HDFC Bank — credit card returned to bank, unable to contact to customer care

Address:

400078

Hello

Recently i applied to hdfc bank credit card which has already got linked to my net banking account. Due to some issues with the courier service they returned it to hdfc, it was shocking that the courier service didn't even tried to call me. Hdfc keeps sending sms to me as card as returned please contact customer support. When i call customer support i'm unable to connect to any representative. I tried almost all the number. Tried to email still no good response. Tried to connect on twitter still no good response. My card is stuck with the bank itself. This is so frustrating which is happening for 2 months now.