Got 100, want articleship in big 4

I, Ashish Raparia, have passed both groups of IPCE May 2012 exam in first shot with 441. I have got 100 in Accounting. My roll no is 270976. Now I want to join articleship in any of the big 4 firm in Kolkata (PWC, KPMG, Deloitte, Ernst and Young). U people know that it can be possible only if I get any reference. So if any of u can help me, please..........

If any of u want my CV, please give ur id

         My Cell Number: 8961672590

        Thanks~