1 year on and still can’t access funds from Ninety One

I have been trying to withdrawal funds for over a year now. Branch in Es*** can’t pick up a think when I contact. SA branch had told me there was a R0 balance 1 year ago. I knew it wasn’t and this was confirmed by a Nintey One client services leader. This after I actually had to go to the branch and insist to speak to someone. Was told that would be the only person I would be talking to and assured that they would try help. Thankfully he was able to pick up the account with the balance that I had insisted existed and was at Es***. . Es*** Branch still can’t pick anything up. Since then, 2-3 months ago, I had been passed onto someone else with out notice. I have been given the run around , rushing around to overnight documents that had no result. Now I have not had a response for 3 weeks. Have also contacted the original service agent with no response. I am at wits end and don’t know what else to do. Nintey one are the custodians of my investment and really should be communicating as to what is going on. Please help