Master Circular on Customer Service in Banks Please refer to the Master Circular DBOD No.Leg.BC.21/09.07.006/2014-15 dated July 01, 2014 consolidating the important instructions issued by us in the area of customer service up to June 30, 2014. This Master Circular consolidates instructions on the above matters issued up to June 30, 2015. 2. Banks are also advised to ensure that copies of the circular are available in all their branches so that the customers can peruse the same.