Disgusting service from Mango Airlunes

I am beyond disgusted at the lack of service Mango Airlines offers its clients. I am still waiting for them to respond to an email that I sent to them on the 23rd of March 2020 requesting vouchers or preferably a refund for cancelled flights for my wife and myself to Cape Town from Lanseria Airport due to the lock down. I emailed them again 2 days ago and still no response.

This service us absolutely not acceptable and I know that I am not the only one being treated in this disgraceful manner. I have tried on more than one occasion to contact their call center but the phone just rings and rings for over an hour and no one answers.