Momentum Bad Service

I have resigned 16 months ago and submitted my pension fund withdrawal request. I have not received a single direct email from Momentum to inform me of the status of this process despite them taking over the fund administration more than a year ago. I have phoned numerous times and the answer is always the same - that they must still load my data... The manager never phones back or responds to emails. There is zero communication and zero progress. I have submitted two recent complaints to Momentum and neither have been addressed.