British Airways cancels my flight (during Covid lockdown) and refuses full refund

British Airways cancelled my flight during the Covid lockdown 26th April 2020. I app**** for a refund on the British Airways website however they only refunded me a tiny fraction of what was due. After calling their call centers (both Comair and British Airways) who both said they were not able to help however they said I should log a complaint on the British Airways website. I then logged a complaint and they continue to refuse the full refund I am due.

British Airways did however refund a family member of mine who was on the exact same flight (both departure and return) with no questions asked.

Double standards are unacceptable.

I am requesting a full refund on my flight that was cancelled by British Airways.