Hi,
I got the refund in 3 weeks. Mailing them wont help.You have to call the customer care to record a complaint. You can call the toll free number 000-800-100-4072 for India.Don't worry you will get the refund but it may take 3-5 weeks.
As for the registration,if you don't get a confirmation mail,then it is incomplete .So hurry and call the customer care soon to get the refund asap and do register again.