ITR filed with wrong PAN

Please write a letter to AO of your ward with challan copy of self assessment tax deposit and ITR.

Actually ITR was filed by someone else, who lost challen so challan details are also not available.

the ITR may carry the wrong PAN, but tax payment should be in right PAN, 

it can be checked with 26AS regarding the credit of tax and hence you can visit ITO for correction.

i would like to know:

challan 280 paid but wrong pan, now i want o write a letter to income tax to correct the same