Spree - Worst customer service ever

I had bought a pair of shoes on the black Friday sale for my husband, and I was sent the wrong shoes. I called in to notify them, and given that it was the busy season I waited 50 minutes on the line before I could speak to someone. To cut a very long story short, over a month later with multiple emails (that were never responded to) and phone calls amounting in over R400 worth of airtime, I am still stuck with the shoes that I did not want. I have spoken to a manager today, who was unapologetic and not even willing to give me the same style of shoe because in the interim they have put the price up. This was their mistake, not mine. They are not willing to make up for the inconvenience, nor are they even concerned with the fact that I am unhappy and will eventually, sit without a product I very much wanted and ultimately paid for. This is the worst service that I have ever experienced from any company EVER, and I tried to be nice at first but it got me nowhere. The reaction I got from the manager was shocking to say the least, she should not be in her position if she does not want happy customers. SHOCKING.