Worst customer service ever

I have pension fund which was compulsory as part of the package from my previous employer and after mutual seperation I chose to cash it out rather then continue... This being said I have never recieved any assistance managing my retirement savings with AF despite numerous attempts and call them. We recieved an sms Thursday last week saying the money was being released, only to recieve an sms the following day saying the payment was rejected due to a banking issue. On the Saturday we made a trip to the bank to check all was okay on their side and we got a bank issued statement to that effect. On Monday I send a copy of this statement and my ID again to AF with no response. I resent it in Tuesday and followed up with a call. I was then told that it would now take another 4-6 weeks, which made no sense to me as a week ago they were ready to pay. I asked to speak to a supervisor and was place on hold for ages only to be told a supervisor could not be reached and they would call me back. No one did so I called back the following day and was told that payment would be made by Friday. Then on the Thursday I get a call and the operator tells me that they need a change of banking details form filled along with the banking details, which again made no sense to me so again I requested to speak to a supervisor and again no one was available. The operator said she would send me the form and I agreed to complete it and send it back straight away. I have yet to recieve this form. How can such a reputable company have such an appalling lack of customer service especially when Im expected trust them with my money and financial future. Awaiting an immediate response from AF as I have wasted over R300 in airtime not to mention the heartache and inconvenience caused by them.