Very rude agent and asking for unreasonable request

I must say this company is full of tricks up their sleeves. So here I am putting in a claim and I sent all requested documents to my surprise they telling me that I need to send a letter of authority even though I am noted as a beneficiary (I need an explanation as to why they want that when the deceased clearly told them to make the payment to me hence I am noted as the BENEFICIARY) . So I call the call center on the 26th and I speak to Nonjabulo who was utterly rude and unprofessional, she was speaking over me and not giving me a chance to finish my statements and when I asked her to give me a chance and I said what I wanted to say she then kept quiet and I to say hello for about 5 times before she could say anything oh and she said I AM HERE with an attitude. To all the people who are insured with this company you going to have a lot of issues when you claim, I know sales agent say the claim will be paid out in 48 hrs well that is a lie, it's 2 weeks now and I still don't know the outcome or let alone get feedback on this policy. Just be on the lookout people