Bad service sanlam

I'm very mad about sanlam I made an enquiry last year December been sending them email they are not getting back to me. To cut the story short my dad passed on 2009 he was working at different companies for many years even worked for Coca-Cola company and last job Aspen CO Ltd as a truck driver I've seen that he has money that we where supposed to claim sanlam asked for documents we sent them now they don't get back to us from December 2023 they say it's fine in progress even now bad service I need sanlam to get back to me urgently regarding this matter