Funeral. Claims pathetic service

I am complaining of the pathetic service I am receiving from. OLD MUTUAL regarding my claim. I submitted a death claim on the 27th of July when my uncle passed and I was advised that the quickest way is through the WhatsApp process. I did the same and got a reference CEA*** a week passed with no payment. After numerous attempts I got through the ca center and I was told that my I didn't enter banking details and I am certain I did. Nonetheless I sent them to ref GSENQ427162 and sent my bank confirmation letter and the consultant confirmed receipt a week ago. Tody there is no payment or confirmation of my claim long after the funeral. I have not buried my uncle with the dignity he deserved through the inefficiencies of Old Mutual. They promised a 24 hour turnaround time. For. A funeral claim