Takealot refuses to refund me!

I bought a set cannisters, breadbin and cake in from Takealot in July. The first delivery was incorrect. I ordered a powderblue set they delivered a grey set with missing items. The subsequent delivery had 90% of the items chipped and missing parts. They collected the set. I asked for a replacement of the same items without faults, THEY DELIVERED the same items with chips and all sorts of faults. I called them and they picked it up. The third delivery was the same package with a different protective plastic colour. They took it back. The fourth delivery is the same items and now they are refusing to take them back citing that I took long to confirm their confirmed pick up time slot, they sent a representative to my delivery point and he wasn't able to collect the items. I live in two provinces and when they confirmed the pick up time I wasn't in Capetown. I have lost count of the number of calls I have made and spoken to their customer service reps who keep promising me that I'll either er get a refund or have my items replaced. The set cost me over R2000. I'm never buying anything from Takealot. Such a hassle to communicate with them.