Very disappointed in Momentum Retirement Administrators

I submitted my Denel surplus withdrawal claim to Momentum Retirement Fund Administrators on the 14th of April 2021. To date I have not yet received a payment despite following up numerous times. There seems to always be an excuse. I phoned in June and was told that it would be paid mid July. Every time I phone this month I am told that it has been paid. This morning I was told that it was paid on the 25th of July. When I requested proof of payment as I have not yet received the money, I was sent an email that the pdf generated letter has not been generated yet and they therefore cannot give me proof of payment, but on the email they confirm that it was paid. I am at my wits end because nothing is reflecting in my account and no proof of payment can be provided.