15CA on money transfer

BUT THE BANK OFFICIALS ARE ASKING FOR FORM 15CA.

1. In your case, it will be considered Repatriation of sale proceeds of Immovable property in India by NRI. 
2. RBI has issued a notification in this effect dated July 1, 2013. Detailed conditions and procedures are given for repatriation of sale proceeds of the Immovable Property in India. 
3. It will not be a mere remittance of money to foreign account but rather it will be covered under the above notification.
Please go through the notification before making the remittance. 

it will be more helpful, if you provide that notification, or notification number.

Regards

RBI/2013-14/4 July 1, 2013 Master Circular No.4 /2013-14