Not a happy client

My name is sonto Mo***eng. My father passed away last year 2021 July, he had policies with old Mutual since 2005, I have taken steps to claim for his policies since August, I submitted every documentation that was requested but they keep asking me to re-submit them again. This has been going on since AUGUST 2021 and there's no progress. I have been to the branches numerous times but this matter is still not dealt with. I have been calling and emailing but still there's no progress.. I am not happy with their service rendered.