Absolutely NO response from Mango 2 months later!

On 15.02. my daughter and I were booked from Lanseria to CapeTown. Planned was return on 22.02. but mistakenly (IF it was our mistake, there were more travellers with the same problem) booked for 22.03. When we tried to change our booking @ the CapeTown 'helpdesk' we were given the response \it's either 2.000R each for going on standby (with no guarantees) or 4.000R each for new bookings. No help offered whatsoever. We were absolutely shocked. The only way to secure 2 seats back home was to make a completely new booking for the following day