Revised return of year 07-08 onwards

Sir,

In a company, return on contractor has been filed in year 07-08,08-09  in which one contractor has not given his pan no.So even TDs has been paid & retrun has been filed by the company, the contractor  could not got get credit of tds amount n income tax authority has given him notice and the contractor is asking the same to company.Pls tell the remedy.

Thanks n Regards