Videocon Industries — correct my name

Address:

600040

Sir/madam,

My customer id :[protected]
My rtn:[protected]
My name is sathish kumar st but in account it's entered as sathish kumar sj, kindly correct my name as sathish kumar st. I have already raised the issue through voice complaint, but they said i can change it myself through login in website. I tried it but i was not able to change it. Kindly change it.