Income tax demand

complicated. other person got tax credit

Mam,

You need to approach your jurisdictional assessing officer and file an application for change of PAN in the self assessment tax challan. This was the first mistake to be rectified, once you have corrected the challan then file for a rectification u/s 154. Now, as you have mentioned that already 4 years have elapsed IT Department will not entertain such correction in the challan, but still you can give it a try by personally visiting the Jurisdictional assessing officer.