I submitted a claim under my policy early March,no communication from them,I tried many times to reach them

I submitted a claim under my policy early March,no communication from them,I tried many times to reach them.i ended up Lodging a complaint to FNB complaint department they gave me complaint reference number (***NF)but after a few days they just closed the complaint without any reason that given to me in writing.the claim assessors responded after I Lodging a complaint.they said they need another document in order for them to finalize my claim.i did send the requested documents but even now my has not finalized.no updates from the person who work with this claim.turn around time of claim assessment has passed long time.i am not happy at all about what's fnb handling my claims if I have claim because this is not a 1st time doing this.i need a resolution of this issue as soon as possible.