Bad Service from Kulula

Being at a school I have made use of group bookings on many occasions before. I booked and paid for 16 tickets to Cape Town. We are flying on Sunday. To date I have not received my tickets. I have phoned the group department on numerous times. Everytime I have to speak to someone else. The First consultant no longer works for ComAir. I have to make a change on the booking and no-one is getting back to me. I have sent 3 emails still no reply. I phoned group bookings and they said the consultant will get back to me. This is ridiculous. Terrible service from Kulula!!!! I am the one to follow up the whole time. Please assist!!!!! This is really not good from Kulula!!!!