Tech Mahindra — Problem during filling the Registration form

I was registering for the tech Mahindra off campus drive but mistakenly, I filled the cgpa criteria instead of percentage one's which resulted in showing not eligible when registered. Then, I re-filled the form and fill the right, given criteria of percentage and applied for registration but it shows the notification already registered and check your I'd and number for test but I didn't got any of the mail regarding this nor was registered previously. Please, resolve this issue asap, so I am able to register for the same.