No delivery and useless customer service

I placed an order on takealot.com on 18/12/2017. The delivery was supposed to be delivered on 22/12/2017, so I put in my home address. On 19/12/2017 I got a message to say my order would be delivered that same day. I called takealot to inform them that there's no one at home and enquired if the order could be delivered at my workplace. They said I could not change the address, so I asked them to deliver it on the 22nd as originally arranged. I called them on Thursday, the 21st to confirm if my order would be delivered on the 22nd and they said yes. On the 22nd I called the call centre because I had not gotten a message to say my order was coming. Yusuf escalated the matter and I got a message at around 10am to say my order would be delivered before 5pm. As I'm writing this message, it's 17:42 and my order has still not been delivered. I've wasted about R100 on airtime calling them and still no joy. They couldn't even transfer me to a supervisor. I am now left with no choice but to cancel my order as I'm travelling tomorrow. So mad, I wasted my time and airtime. Takealot.com your delivery service is flawed and inflexible, so unhappy and I doubt I will ever order from you guys again.