Rediff.com India — Rediffmail Account compromised

I am not able to access my rediffmail account..I am getting the error of "Wrong username and password combination".. But I am very much sure about my username and password as it's my mostly used account.. I guess my account has been hacked.. I am not able to reset the password thru the reset password option as the alternate e-mail ID and phone number displayed is not mine.. My email id is [protected]@rediffmail.com.. Please let me know whats the problem.. I have also tried logging thru the mobile app but getting the same error. I have very important mails in that account.. I am attaching the screenshots for your reference.. Please help me to get out of this problem..