British Airways Bad Service

I booked a return flight for the 24th/12/2020 and 27th/12/2020. My reference is KBIEXK.

I want to postpone the dates to 28th/08/2021 and 31st/08/2021 due to the exponential growth of Covid-19 second wave in the country, especially in Northern Cape. Also the flight costed R3 823, there is no refund for cancellation.

I have been trying to get hold of the airline since the 18th/12/2020 to postpone my return flight. They are not picking up (you hold for over 18minutes) and there is no direct email address for such a huge internal company. I can not even postpone online under "manage my booking".

I need to reschedule and I'm stuck as to how, because I have tried all I could to get hold of British Airways