State Bank Of India [SBI] — ecs bounced due to migration

Address:

Mumbai City, Maharashtra

I have a car loan going on lended by tata finance. The emi for which is debited from state bank of pataila every month. Now state bank of patiala was migrated to state bank of india. They did not bothered to inform customers about the new micr/ifsc code, consequently ecs for emi bounced and charges levied to customers inspite of having sufficient balance.
Obviously the lender bank is asking for bounce charges and transfer charges too to update new micr/ifsc codes.
Why should a customer pay for their problem? Moreover their customer service is pathetic. I have approached everyone right from the customer service to the nodal officer. As a reply i just got one call from them again asking all details which i had already written on email and said will get back. Nobody then contacted me. I would advise everyone to stay away from govt banks.