Frustrated and Angry with Makro wonderboom

I purchased products Online and a day later they sent an email indicating that some products are now out of stock and they will give me a refund. They have refunded me, however, not for all products. I have been calling Makro for 5 days now, and every day someone says that there will be an agent who will call me back and they never do. The worst part of it all I still have not even received the products, and there's no communication whatsoever, and I was supposed to receive these products on the 2nd of December. If I do not get the rest of my refund and products, I will physically go to the store on Saturday and act like a mad woman. I can not buy products worth R7412 and not even receive good customer service, at this point there's no service at all that I am receiving. I am extremely angry at this point and should be asking for a full refund.