Tds credit mismatch

Dear friends,

We filled a Return before due date (31/07/2013) while filling we taken Tax credit as per 26AS in the return  But now few clients made TDS on filled the return now the Tax credit mismatch with original return. What are the steps to follow to get correct Tax credit & Get the refund? We have not received any intimation or rectification from the IT dept.  If have any one know s about this issue please tell me.

Which is the following option to follow?

1. Request for intimation.
2. Request for rectification
3. Revised return.

Thanks & Regards