Poor service from Mango Airlines

I had booked a flight from Bloem to Cape Town for the 23rd October 2020 to return 26th October 2020,to celebrate my wife's birthday. The flights were booked around August. On the 20th October I received an sms that confirms cancelation of our flights. I have been trying to call Mango to get my refund. I send emails and follow up emails, and to date I have not received any response from them, let alone my money.