No assistance and not helpful

We received a letter from a tracing company with regards to unclaimed benefits for my deceased dad. I've been trying to get assistance from Old Mutual with regards to the requirements as this estate was finalized 10 years ago. There is no more "executor" and no "estate late account". I spoke to a lady last week Wednesday, the 22nd of July. She was very kind and said she will get someone to contact me to assist my. By today, the 27th of July, I've received none such assistance or even a phone call. The lady I spoke to today, Lebo, was rude and not helpful at all. I put the phone down as she didn't even wanted to listen to what I had to say and she starting raising her voice at me. She continued with giving me the standard answer and said if I wasn't happy with her answer, I can leave the claim and the money or send an email for assistance. Not the kind of service a agent should be giving any customer. Now I also know how Old Mutual makes their money, as they make the claim process so impossible that people actually just leave the money there because it's not worth the fight.