No response from Discovery Vitality

My membership was terminated at virgin active because I didn't pay the vitality premium. I was told to make payments to cover cover the arrears so that I can get back my membership at virgin and be refunded the money I have paid at virgin active. I did make a payment if I am correct in May 2017 until today I'm still paying full amount. On top of that I was promised to get a refund for all the months I have been paying at virgin active. Every time I speak to a consultant they all promise to call me back. I have cancelled my membership at virgin because I can't pay both vitality and virgin active full amount. Please help me to get at least my money back.