Flight Centre South Africa complaint: 2 MONTHS AND I AM STILL WAITING FOR A RESPONSE!!!!!!!!

I honestly do not know how this place runs a business! I have been waiting for two months for them to answer me regarding their mix-up, and they are simply ignoring me. Flight centre advised per email (happy to share the emails) that they will get back to me regarding a possible flight voucher, and I am still waiting!! I have been sending emails, complaining on Hello Peter but still nothing! My flight tickets were booked in 2020 right before lockdown, but no one shared flight numbers with me as the person who assisted me left flight centre shortly after! I have been dealing with other individuals after she left, but the one after the other also left flight centre, and thus I received absolutely no service. Flight centre did not share crucial details with me regarding a possible flight voucher to rebook again,
and now I have to take the loss for their incompetence, this is unacceptable!