Please refund my healthsaver. It is my money afterall

I cancelled my momemtum medical aid in December 2017. I filled out the part where they request banking details for the refund of health saver account. On a query in Feb about when my health saver will be paid back I was told that after 6 months from cancellation. However I was told that if I wanted my money earlier it will attract an admin fee of R250.00. Through all my interventions no one at Momentum could provide me with a written form of this nonsensical clause. I qouted the terms and conditions on several emails that just go unanswered anyway. The healthsaver prides itselt in being the NO ADMIN service why all of a sudden am I told about this R250 or 6 months waiting period, when it appears nowhere in written form. I do not subscribe to that. I want my savings to be paid into my bank account with immediate effect, and don't you even dare try to charge me the said admin fee. That is my money and I want it back.... How do you think I am paying for my medical expenses in the meantime whilst you keep my money?? This is ridiculous.