Death claim update

I have logged death claim on my late mother’s annuity with momentum in December 2023 and no one from momentum is updating me on anything ,till I call or email to ask about the update….today 17/04/2024 I called 2 times first call I was told 3rd party still needs to send feedback when I checked the update on 3rd party told me everything was finalised on the 10/04/2024 I called momentum back at 14:15 and the lady I did not get her name made me hold for 17 minutes till I hanged up and called back only to find out she went out to lunch….and I was informed people with access to system that I am seeking update on they are on lunch.

I want to understand should I wait for 6 months for this claim to be finilised?