Poor customer service.

On the 7th of July around 09:00-10:00 I went to Woolworths at Soshanguve Crossing to purchase two pairs of boots. The boots were unavailable at the store so they ordered them from another Woolworths store in Woodlands. I was told that I will be informed as soon as the boots arrived. A few days later the boots are delivered, but I do not receive anything not even an SMS or voice message to notify me and they claim that they did. So on the 31st of July I go back to the same Woolworths to pay my account. While I am there I enquire about the boots which I had ordered. The supervisor informs me that the boots had been sold during the sale. I asked them why they had sold them because I had ordered them and they told me that they had been "calling" me every single day since the boots arrived. I find that hard to believe because I would have picked up someday during those days. The worst thing is that it is not the first time that I face a problem with Soshanguve crossing Woolworths. The same thing happened in 2016 when I had ordered a pair of boots. As a valid customer I feel that I am not taken serious. Please help me!