Legal heir refund

Fellow club members

A client (son) whose dad passed  away in august 2017 . The deceased has been deducted TDS for the advance amount paid  for the sale of land which exceeds rs 50 lakhs . But before the sale takes place the father passed away . So the purchaser of the land has informed the seller to file income tax returns to get the refund of TDS. 

Without knowledge there client (son) has filed the income tax returns in the deceased account in October 2018 by giving the son bank account in the income tax return of deceased. ITR was processed and the refund was approved. But the refund was not given due to bank account is not the same of the deceased. 

Please suggest what to do next and how to claim the refund.

Thanks Im advance