Worst Customer Service Experience

On the 5th of June I went to Waterfront Express, Cape Town and ordered the Samsung A51 and was told that the phone will arrive in 3 - 5 business days. After waiting for almost a week, I recieved a call today, on the 11th of June, and was told my phone was ready for collection, only for me to drive 30+ km from my home to be turned around at the store because the 'system was down.' I understand that technical issues are unavoidable but I don't see why they could not call to tell me that collection wasn't possible because my order couldn't be processed. I'm deeply dissatisfied with this customer service and feel like severing all ties with Telkom. Worst experience I've ever had with a service provider. Wasted money on fuel and my time to be turned around bluntly by staff who couldn't care less about my efforts. Feeling very disgusted and humiliated.