Bad and unfair client service

I had to cancel a portion of my booking due to the national lockdown end of March 2020. I have been in conatant /weekly contact with them, to obtain my refund for the 3 days I had to cancel @ R 1 400 per day = R 4 200. Finally after 3 months, I receive a R 714 refund ( apprx. 16.5% of the total due) without any explanation of why or how this has been calculated.