Funds and profile disappearing from Momentum

With my previous employer I contributed to a pension fund at Momentum. a Month after my resignation i receive a statement from Momentum, confirming the amount in my fund. a while after I decided what to do with my funds, I contact Momentum to give my instruction, after I spoken to 3 consultants there is no record on Momentum system of myself or my fund. I started to sent emails with the statement 11 October, I received a response that I will receive feedback 13 October, which did not happen. Follow up email sent 20 October, no response Follow up email sent 23 October, no response Follow up email sent 01 November, no response 2nd November I receive an email, our IT department is looking into my case. Follow up email sent 20 November, no response Follow up email sent 23 November, no response. Worst customer service I have ever experienced