No solution to claim!

Am so disappointed in them because my uncle was paying their insurance 4 years. When he took the insurance he wasn't leaving with us until 7 years after! My uncle is bipolar, so after we found out that he took out an insurance with them we went 2 their offices to ask for a copy of his contract they gave us excuses nd told us to call the head office, when we called da head office the lady told us we r forcing him to ask for this papers nd hung up on us. My uncle passed away last December nd when we tried to claim we found out dat my uncle had a beneficiary someone we don't even know nor how to find the person since my uncle didnt have children. So when we asked them is there something we can do to change the beneficiary maybe get a letter of authority from the court, the lady said am trying to commit ***** she's not even sure that he's my uncle. Even today there is no solution because when ever we talk 2 them they portray us to be *****sters.