Hongkong & Shanghai Banking Corporation [Hsbc] — Will not remove deceased wife's name from account

Address:

Mumbai City, Maharashtra, 4000074

I am 76 years old and I live in USA and visit Mumbai in winter months.Last year I presented my wife's death certificate to HSBC to remove her name from joint NRE account.They said the death certificate, issued by state of New Jersey showed her name as Meera Makhijani as against account which showed her name as Mira Makhijani.I went back and got the cerificate reissued as Meera also known as Mira.They still will not remove her name.from the account.

Please Help