The date of birth is wrong

Date of birth mentioned in my profile and admit card is wrong . I want to update it to 03 jan 1999 .Please update it. I have send more than 10 to 15 mails for this and as well as my 10th marksheet for verification of DOB but still their is no correction its more than 60 days days i have given the test and received my test score also but still date of birth is not changed. PLEASE DO IT ASAP