Momentum disgusting service

Momentum’s service has been nothing short of disgusting. I resigned from my employer exit was on 31st March.My HR department sent all the relevant documents to momentum to start the withdrawal process. I sent the same document and several emails later absolutely no response from them. I decided to contact them I was first told everything is in order the disinvestment process has started however the app showed that I’m not in the process of exiting the fund so I called again and was advised that my withdrawal request has been rejected because they are awaiting the allocation of the March contribution. I was shocked surely the administrator dealing with the claim has to follow up and ensure all payment and documents are available so the claim will be processed, I requested to speak to the ghost administrator but as expected she was not available. I am told to wait until the 15th April to start the process whilst the other consultant told me that the withdrawal is pending and has not been cancelled. What am I to believe because it’s a different story every time I try to follow up