Registering for the exam

hi all,
I decided to take exam after 2 weeks. So I thought of registering for the OCJP 6 in Oracle website.
In the middle of registration process, I received a mail,It is said that, to continue the registration process, please contact customer care.
I called. They said they will send me a mail regarding it. I have not received the mail so far

So can anyone help me regarding it?
I want to buy exam voucher and register for the exam as soon as possible.

Thanks in advance!!