Disappointment

Good day I am so dissapointed at British Airways Comair with their services my brother booked for me and my cousin in January two tickets from EL to Cape Town but unfortunately there were unforseen reasons that came up and my cousin cannot travel to Cape Town and my brother has been writing emails to them asking for refund or voucher but in vein and the sad part is that the tickets was booked for 13/04/2022 and I don't know what is going to happen about that ticket