Discusting service

I placed an order on Saturday 4 November at checkout it gave me a delivery option for Sunday 5 November at R 90 so I chose that option obviously because I needed my order urgently. Sunday when I went into my order it suddenly said delivery date is Sunday 12 November. I phoned the customer service centre explained my situation and they put the phone down on me when I got upset with the fact that they just refuse to help me at all. I phoned back again, explaining the situation again, again they refuse to even try and help me so I asked that my order get cancelled and refunded because now I obviously have to make another plan I was told I can't cancel my order or get a refund I then asked to speak to a manager again they put the phone down on me I phoned a third time and again had the entire conversation again. I was told I'm not allowed to speak to a manager. I am getting my lawyer involved now, they are going against consumer law. Also they will reimburse me for the event that I can't go to due to them because now I don't have time to make another plan. If I knew they wouldn't of been able to deliver in time I would have made another plan. I will never order from them again.