+1(514) 937-9445 or Toll-free (Canada & US) +1 (888) 947-9445
But i could not find a delete option. should I register with another mail ID? but they say one can have only one account
Leave this account and create a new one with newer email address.
 
Just call on their customer care number, and they will modify right away. Through emails, they will take a week or two.
I just spoke on the call centre. They have sent my request ahead and said they will revert within the next 7 days. On the customer care number they were not able to make the change right away. She also took note of the emails I have written.