PnP wont honour Black Friday prices

I'm very disappointed in Pick 'n Pay, and their customer care following Black Friday. I placed my order on the 23rd Nov, with items which I can't get from my local PnP, like an upright vacuum. On the day of delivery, I receive an email saying that there is an issue with the payment, and someone would phone me, and please can I redo the order. Immediately I checked the balance on my card, and rectified the issue, as there wasn't enough on my card. No problem. I'm told today, a day after I was told I would be phoned, the day after I mailed asking them to please reprocess the card payment, I'm told that PnP refuses to simply run the payment request again, and refused to honour the prices of the good at the time I ordered them.

This was an expensive shopping basket. There was a problem, which I fixed in less than 5 minutes (and had the payment been taken on the day I placed the order, there wouldn't have been an issue, but since I had to wait 10 days, and the card had been used, there was now an issue).