Incorrect tan in tds

First of all contact to the certificate provider and get a correct certificate and further if your PAN is correctly mentioned than entry must be shown in the 26as. 

I had already requested my employer VSSC Govt of India for correcting the TDS during January 2011 But so far they did not do it, What is the solution?

Dear Mr Sunilkumar,

             Pl. write under REGD POST ACK DUE to your employer pointing out the discrepancy; with a request to make amendment in the TDS return and to upload the corrected return. Even if your department takes action to rectify the mistake, it will take maximum 1 month to get the correct position reflected in 26AS. Thereafter, you can take up with the Income Tax Department.

In any case, you have to file objection under Section 154 of the Income Tax Act with the Assessing Officer.

In case your department does not take appropriate rectification action within 1-2 months, then you have to again write to the Assessing Officer, IT Department enclosing a copy of your letter addressed to your Department and requesting them to take action (issue notice to the Department) against the Department.

In this way, your problem will get solved. In case the problem still persists even after 2-3 months, please come again.

Can I get provisional receipt number from TIN FC in this regard by giving TAN number