Ipcc registration letter

I have cleared cpt in December 2011 and i have sent all the documents for registration for ipcc on January 2012.

But the problem is i have not received registration letter for ipcc yet.

i want to get registered for Nvember 2012 attempt.

i have sent all the documents, but have not received any letter for registration from ipcc.

However i have received my study material in March.

Please suggest me, what to do now? or what may be possible causes for delay? and is there any problem for such delay of my letter?