unacceptable!!!

On Friday the 27th feb 2015 I contacted kulula to change my flight as my daughter fell ill on Thursday night, I spoke to a wonderful lady natabi who was very helpful, as its not planned for a baby to fall ill I asked if I could change my flight as I was unable to travel I was told that I would be charged a change fee, or I could provide them with a medical certificate and would not be charged, I was put through to a manager zanelie who informed me she needed the certificate on Friday, I explained to her that I could not get an appointment for my baby on that Friday but have ne for the Saturday morning and will definitely sent her the medical certificate first thing Monday morning, I begged and pleaded and gave my word I would definitely email them the medical certificate and the fact that my daughters flight was booked on Thursday this was proof that the cancellation was not planned as babies fall ill its part of life. but as much as I pleaded it was not accepted, I ended up going to the airport at 8pm with my sick baby only to than find out my flight was delayed to 22:15 and than a further delay to 22:45 we reached Durban at 24:00 and out destination at 1am, this is unacceptable.