Canara Bank — wrongly entered email in account and not updating

Address:

110052

I have given 6 times in written to update wrongly entered e-mail in account but they are like tipical govt employee don't want to do anything..
Taday also i asked one of the employee to update it, she has taken in written what to be updated still after log it is showing same wrong email id.. My acc last digit 28511 (Jiaur rehman)... Update my e mail id to zia. [protected]@gmail.com