I tried contacting them through hep desk. But it says my email id is not registered with them. But i have completed the primary stage registrations.Then I tried to contact them with my friend's mail id,who finished the registration process.Same problem occuring.It says "email id not registred" .So I am unable to send them anything

Wait for a day otherwise start again from the beginning process

I completed my primary registration on 18th this month.Tried more than once and also made a new email id for this one and tried from that too.