[Resolved]  Eveready Industries — Pension Delay

My father Mr.Tushar Kanti Biswas was seriously illed by Heart attack on last prevous year 2007 & he also admited in Hospital, In the month of February 18th, 2008 My father have resigned his service life & submit resignation letter to his office Eveready Industries, they are accepted this application. on the month of 12th may 2008 father filled a pension form send by his office. and last wednes day i.e 4th Feb'2009 pension letter comes to my house from Pension office.Park street, Calutta & their statement arrer counting from from dt.21.11.08, at that time I contact their office, pension office told to me, that pension application of your father was submitted in our office on 21.11.08. so, we were starting a pension from this date.But, my question is we submited pension form on 12.05.2008. on this basis pension calculate from this date, & efected from this date & arrear amount calculated from this date, in this matter I think Eveready Indus. is a liable for this condum delayed.What is the procedure for Legaly take over this matter??????