Sanlam provident fund headache

My father passed away in 2021 January and last year around August, we received letters stating how much we would receive. We all accepted and everything was received by them but till this day we haven't received any payment. When I call they tell me that the matter is with the IT department and this has been the case for the past 6 months. Which major corporation struggles with IT issues for six months straight?? They keep sending me from pillar to post and the person handling the claim doesn't even answer my calls and emails anymore. This has been a nightmare