Faulty Air Cooler - No Feedback

I ordered a Milex Air Cooler (15L) on the 05th February from Makro Port Elizabeth. Within the first hour of delivery, I reported that the unit was faulty. I was advised that there was no units in stock but once they get, they will pick up the faulty unit and send the new one. It's now almost 2 weeks later and no update. I either need the new unit delivered or a refund and I will buy it somewhere else.

Thanks, Jean Alfonso