Complaint re Kulula.com

I had trouble booking a car rental last night while the sale was on. The website kept bombing out. I took screenshots of the problem and called Kulula this morning for help. The consultant was rude and told me that "this was not his Problem" and "sorry you will have to pay full Price" and "the website was busy because of the sale". I asked to speak to a supervisor who in turn was not prepared to take responsibilty at all and basically gave me the same information as the consultant.... Thank Goodness I was able to get hold of someone very helpful and kind at Europ Car who spent the entire day trying to sort out my issue and yes there was a problem with the website. I only fly kulula as I am part of discovery and just the day before I booked 4 return tickets From Johannesburg to Cape Town. The after care has been nothing but appaling and I feel really upset that Kulula was so unhelpful despite the money spent on air tickets. There should be some compensation and care for the bad service.