Shocking customer service

I paid for my order on the 17th August and after countless phonecalls where I was unable to get through, I was informed by Charne that my order 'slipped through the cracks' and they forgot to deliver.. I was then promised delivery the next day. My order did not arrive and the day after, Charne called me to apologise and inform me that they could not deliver due to bad weather. I was then told that I had to pay a R400 delivery fee. (The distance is 18km). When i queried this, i got no feedback from Charne or her manager, Glen. Today I received a call from an entirely different sales agent, telling me that the delivery fee is so high because the warranty is included in this price. (I've never heard of something that ridiculous). He told me that he would call me back in 10mins.. 7 hours ago.. and no response to my 2 emails sent following the phone call