Bad customer care from ebucks travel an Kulula

I booked flight tickets for me and a friend through ebucks travel about two months ago. Departure 24 Jan and Return 2 Feb.

But my son (8 years old minor) had a major facial trauma on the 3rd of January and was admitted to hospital for surgery. He is undergoing trauma therapy and has follow up apointments with the surgeon. I've been trying everything to cancel or move my flight ticket but is just sent back and forth between Kulula and ebucks with no body really assisting me due to their policies. I even tried finding a replacement for my ticket but Kulula doesn't allow name changes on tickets like other domestic flights!!!! This is absolutely ridiculous! Seriously!?!?