Succession certificate.

My wife was govt employee deceased in feb 2007 leaving husband (myself) and a 4 months Son. She took House building advance from office where she works also i am working in the same office. My inlaws asked information of her account receivable and payables to office under RTI. Office declared the matter disputed and asked me and my inlaws to bring the sucession certificate after that my inlaws produced the WILL in front of office which was not at all in existence also there are many mistake in the will such as house details are not written correctly her address is not written completely where she resides while making will.

Is the office stand legal to ask for succession cert and held up the matter? all the due receivables and payables PF, death grautity, house loan payment are held up till date? House was nominated to me and society and grampanchayat did all the trasfer procedure to my name i have submitted all the transfer documents to the office and requested to free the house since it was nominated to me by form "K" which relates to nominatyion in co hou societies and shown my interest to pay up the dues outstanding on house but still things are pending house is in my possession interest burden is increasing office calling my inlaws but they are not coming. i feel my son and myself are the legal heir? can you please write what would be the judgement regarding succession certificate?

my in-laws have submitted the will in court too. what is the rules for Providend fund? my office says there is no nomination in pf account? my in-laws received the amount of my wifes LIC policies around 7 lakh policies was taken before marriage and they were nominee in that. i am aware that nominee is only liable to receive fund but he has to give it to legal heirs. but they are not giving. what is the time period to claim the amount from them it is now complete 7 years. Can my son claim the amount after he becomes major?