Poor customer service

Its been over 4 months since I've left the company that I worked for and I have been trying to withdraw my provided funds from momentum. I've gotten the most poorest customer service by far. I keep calling them to find out what the problem is but no one is willing to help. Firstly they keep sending smses for me to call them, when I do their lines keep cutting off even in the middle of a call with a consultant. I spoke to a person called Solly Jele and each time I call they tell me he is not available and he will call back, which he never does. I'm very frustrated and it seems like no one seems to care. So I urge anyone that wanna invest or take up any financial service from this company to reconsider as it might be hard to get your money back when its mostly needed.