"There is one area in customer service where we're getting deeply concerned. This is around mis-selling, particularly of third-party (insurance) products. Everyday, we keep on hearing numerous instances where such practices are going on," Mundra said at the annual Fibac bankers' summit here.
When asked to elaborate, he told reporters that there is scope to make the penal provisions in law "more stringent".
The former commercial banker, however, exuded confidence that lenders will "get the right message" and discipline themselves so that other steps will not be required.
"Mis-selling is one area which should concern us very deeply and if we don't feel a perceptible improvement and we see that the instances are continuing to come out, I think the consequences can be very serious, which can be variety of ways, including financial penalties," Mundra said.
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He said ideally, this should get the attention of the top bank management and should not be seen merely as a compliance exercise.
Mundra also wondered if bank staff themselves are fully financially literate.