Inhuman treatment

We had a holiday planned at the end of January where we booked flight through Kulula.com. Two days before Christmas my girlfriend was diagnosed with leukemia and we were told that she needed to start with chemo as soon as possible. Her first chemo session started on 16 January. Due to the nature of her treatment she had to be hospitalized over the same period we had booked our holiday. I immediately informed Kulula of this early January, where initially they were very helpful to refund me and required certain documentation. I have now supp**** them with a Dr’s report, a blood report and Dr. note confirming that she is hospitalized. Kulula refuses to refund me my tickets until I supply them with further documentation. I use Kulula for business travel many times during the year so surely they could see that I am not taking a chance. They are cold hearten and people should very-very careful to book any travel through Kulula. I will also never use them for any business travel again!