HDFC Bank — sending me credit card without my application

Address:

Darbhanga, Bihar, 846004

My wife hena Arif account number [protected] in hdfc darbhanga..Bihar ...never applied for a credit card...but we received a credit card ...why???????... It's a bad policy ... when I contacted the bank they are saying ...pls give application...I gave application ...then they say ..you have to consult customer care...and you have to fill a form ...I am tortured now by this type of cheaper and mean attitude by hdfc people ... shameful act we are very old customers ...not only one whole family ...8 account...we will close all