Kulula's horrible customer care

i found kulula's customer call centre to be the most unhelpful and uncompromising 'customer service agents' I've ever experienced. To be charged to preselect your seat i find quite outrageous and when i called the next morning to have it reversed i was told no as it was 'my own fault' and the charge is non refundable. when i asked for an exception to be made as it was done it error i was told i should have called the call centre for assistance if i was unhappy / unsure (despite mentioning numerous times that i made the booking at a time the call centre was closed) but it was my fault so no refund. i then asked to speak to a supervisor and was told 'no she is busy' and asked if i could leave my details so she could call be back when she was available and was told no she wont call you back she's always busy! shocking! on my second 'run in' with their call centre i tried to add a car hire with my flight which would qualify me for a discount. i told no this is not possible because it should have been done at the same time so you've lost out on the discount - end of discussion! this is the first time i have booked with kulula and is definitely the last. what a shocking bunch of unwavering robots that hide behind small print!