6. There is nothing to show that before the excess payment claimed to have been made was effected, any show cause notice had been issued to the Petitioner calling for an explanation from him with supporting materials relied in that regard. Such incurable flaw in decision making by the Respondents is in violation of the principles of natural justice and would vitiate the impugned order. In that view of the matter, the concerned authorities shall appropriately deal with the matter following due process. It shall be incumbent upon the concerned authorities to issue show cause notice to the Petitioners along with workingsheet of the calculation for the excess payment claimed to have been made to the Petitioner and after affording full opportunity of personal hearing to them and considering each of the objections that may be raised by them, a reasoned order shall be passed on merits and in accordance with law following the procedure laid down in the instructions in G.O. Ms. No. 286, Finance (Pension) Department dated 28.08.2018 issued by the Government of Tamil Nadu, uninhibited and uninfluenced by the earlier order passed in the matter, and the decision taken shall be communicated to the Petitioners under written acknowledgement.”