Mango Airlines bunch of ******* with poor service

I booked flights from Jbn to CA prior to the initial locdown and could not fly with my family as a result. When booking I used 93k voyager miles and also paid R2043.00 in cash to book the flights. I contacted the airline way in advance but the cancelation of the flight and was told to email vouchers which I did. I received a response and furnished my details. I only received a voucher to the value of the cash portion I paid in and have since queried about my 93k miles which were not reversed, refunded or issued as a voucher. Mango refuses to reply to all emails sent since April and I have sent them over 9 mails... read this loud and clear I WANT MY CASH REFUND NOW!!!!