Worst Service ever! Very unhappy customer!!!

I made a purchase on the 26th of April - received my parcel 2 days later, Great! As soon I received and opened the package, I discovered that the unit looks nothing as the picture advertised - colour wise. I immediately called the takealot customer service department to inform them that I am unhappy with my purchase and would like the unit to be collected and for me to be refunded. I was then told I need to pass on photographs of the unit and the barcode. Why? They had just sent it to me, surely they should know what it looks like and what the barcode is??? None the less I did as requested. And sent them a lengthy mail advising them them of my unhappiness in this regard. All this took place on the first day of the 7 day purchase period. Collection was then arranged for Wednesday the 4th of may. I had given them my home address, yet they sent the courier guy to my work address. Collection was then rebooked for today, and I was assured by 2 customer service agents that collection would take place today the 5th of may before 5pm. My parcel is yet to be collected. I have now phoned in again to arrange for collection for the 3rd time. On this call I was told that the relevant people will call me back. Yet another delay! In the past week, I have spoken to SIX DIFFERENT AGENTS- EACH OF WHOM NICELY ADVISES THAT THEY WILL BE ESCALATING THIS MATTER!!!! NOTHING HAS BEEN ESCALATED- BECAUSE CLEARLY NOTHING IS BEING DONE, CORRECTLY THAT IS!!! This is absolutely ridiculous as this is not only taking up my time but also my airtime to keep having to call the contact centre. This kind of service is disgusting and might I add appalling.!!!