BAD SERVICE FROM KULULA

I app**** for a refund on 2 tickets due to illness. A letter from the doctors was submitted. We have been emailing Gareth Arnold who said he had submitted the request and i would take 6 to 8 weeks for the refund to come through. We submitted the documents on the 16th January 2018. I called Gareth yesterday and he promised to call back. I called again today same promise. Needless to say no call back. I find this very annoying and rude . I hope Kulula read this and can do something about it The booking reference is : ILJKXN