Provident fund withdrawal

I am unhappy with NMG. My former employer liquidated the fund we had with them due to the investment portfolio performing poorly and this was finalised early this year. Withdrawal documents were then submitted to NMG and my former colleagues have received their funds. I’ve queried via email before and nobody bothered to respond. When I called to follow up I kept being told to call after a few weeks. On the 27th of February I was told my claim is at disinvestment stage and would be finalised within 5 days. I followed up today, 15 days later, and the consultant who took my call advised they only received my withdrawal forms at the end of March which is not true. Only when I disputed this fact did the consultant check on their system and see that my forms where received much earlier than he claimed. He then said he couldn’t get hold of the administrator so could not assist further.