Dawnwing 48hours late with medical delivery

I am very disappointed with Dawnwing. We ordered Insulin and other diabetic items from the CDE in Johannesburg each month and this month Dawnwing received the order on Thursday and we only got it in Vereeniging on Saturday. We normally get within 24 hours. I refused to accept the order because the insulin needs to be refridgerated within 24 hours. The driver was unaware they medical packages. Who is going replace the spoiled insulin now?