Incompetence and poor service received

I had resigned at my my previous employer on the *** was told that the claim was to start disinvesting once Amazon has paid the last premium to them. The money was then received on the 11/09/2024 I was then advised that the payment will take 5-7 working days and today is the 7th day and I still haven’t received my payout. I call them every single day to find out what is happening with my claim, I send emails too and the last resort was when I messaged one of the administrators who were assigned to assist from Momentum she still hasn’t responded. On each of the calls that I keep making the agents are not able to provide me a definite answer as what is going on the claim that just say it’s with the IT department and they don’t know what the turnaround time is to resolve it. Nobody is helping me in resolving this issue and I have resorted to this extent to get the help that I need as all of my colleagues who resigned the same time as me have received their payouts