goods out of stock and terrible custormer service

I placed an order of Apollo 4pc stock pot set online and made EFT payment on the 14/09/2015. I then got an sms confirming the payment. A few days later a guy from homechoice called and told me they are out of stock hence my order has been cancelled. I asked him when are they expecting the stock and he said in a months' time, and I told him its ok I can wait. On the 07/10/2015 I received a call from a lady again from homechoice asking what else would I like her to tell me more about, other the pots I had last ordered. I told her nothing for now as im still waing for those pots, she then told me that my order has been cancelled as there was no stock and I am not gonna get my pots. I tried to explain to her that I didn't cancel the order I said I could wait until they have stock. She was so rude telling im not getting any pots from homechoice 'cause the special was no longer there so I can't get pots with the same discounted price. I asked her that, if I am not getting my pots then why was I not refunded yet? She said it's my job to call them and ask for the refund. The conversation went on and on, I was so furious we ended up shouting at each other until she hung up on me.