In case you are unable to register your DSC on MCA portal because your name in the PAN card is not as per the ICAI records, you may send fill up the form in the given link :-
And kindly attach a scanned copy of your PAN card along with copy of any of the documents in which your name is as in your PAN card
Bank passbook with a photo affixed and duly signed by the bank
Voters' Identity card
This will enable us to carry out the necessary alignment to ICAI records to share the same to MCA for their further actions.