Dear Ms. Parimala, please try to understand that every government official charged with certain statutory duties has his official limitations. The labor officer, who is a conciliation officer under the IDA, 1947, can at most initiate conciliation under section 12 of the Act only if the complaint is an industrial dispute. Non-payment of dues to an employee under F&F Settlement, per se, is not an industrial dispute under the IDA, 1947 requiring conciliation. Either the employee can file a claim before the Labor Court under section 33-C(2) or under section 15 of the Payment of Wages Act, 1936 before the D.C.L, who is the authority under the Act.
Therefore, you cannot blame the labor officer for the non-service of notices sent by him to the company due to its registered office remaining closed. It would be better if you write a complaint to the State Registrar of Companies in this regard if it's a registered company under the CA, 2013, or issue a paper publication about the next date of the hearing fixed.