Worst Online Shopping Experience

I am so disappointed in their service. I made an online purchase on the 13th of November, today is the 24th and I haven't reviewed it. I called the call centre everyday from the day I realized the couriers can't get hold of me. I then updated my details on the 18th, I still wasn't contacted by couriers. I eventually sent an email but got no response. I went onto my orders only to discover my items have been returned, however when I check their courier website it says pending delivery. This isn't my first time online purchase from Mr Price Home and this isn't the first time I had a bad experience but I was hoping they had improved from years ago. This morning on the 26th, I call to follow up once more and I am told I have been refunded because the items are out of stock. The items moved from being with couriers to being out of stock. How? The communication has been terrible as I had to continously check on how far my order was with no updates only to find out I have been refunded, firstly when couriers couldn't get hold of me I wasn't notified on email and when I was apparently refunded because items are our of stock I am still not notified. What in the Mickey Mouse is going on here?