Order that was not received since November

I am so disappointed on how woolworths treat their customers,I've bought my things online on the 28th November and till today they haven't delivered anything,I'm the one who always call them and they told me that they cannot refund my money but they want to give me a voucher. I gave them a chance to deliver hoping that things will change but still no change its been a month now. They are not communicating I'm the 1 who always has to give them a call,if I don't call they are not calling.Got an email from Tersa saying that she is escalating my matter on the 08th Dec even now nothing. I used payflex to buy my things I even paid up with payflex however my things were not received.