Policy pay out

My brother passed away in June 2017. I have put in his policy for pay out via Momentum. I received a email that my brother, J C de Klerk, ID no. ********** 180106, tax number is wrong. I went to SARS and sorted out his tax number and Momentum has sent SANLAM the new tax number letter from SARS. This morning I phoned SANLAM and the consultant said to me she can see they waiting for the new number to ask for a IRP3. She said she will get the lady to phone me. Until now I received no phone call. Since I handed the new tax number to Momentum his insurances paid out. Only SANLAM dragging their feet.