Refused pay out for my Pension fund withdrawal

I have been sent from pillar to post since I submitted my pension withdrawal documents in February . No one seems to know what to do . Eveytime I call I'm told a different story. It seems like someone is messing up with their system. I went to their offices in Centurion and I was told that they will continue with the disinvestment as they have proof that no contributions are made for me. I made a follow up the following week and they confirmed that the disinvestment is in progress. But now that information has disappeared on the system. Notes that were previously on their system just disappeared. Now they even refuse to give me my benefit statement because they say I am no longer an active member however they still refuse to pay me saying they are waiting for confirmation from employer that they are no longer contributing. What more proof do they need if already on their system it already shows that I'm not an active member? They don't want to give me contact details of a person that I can report this matter to and they only gave me a name "Michelle Cloete" and told me that she will call me back but she never called me.