Pathetic online service

Made an online purchase on the 26/01/21, payment went off my card, yet did not receive any confirmation of my order. When enquiring on he 29/01/21, I was told there was either an error on my card or their system as the purchase had not gone through. Instead of pushing the purchase through due to the fact that payment was made, they told me the funds would be refunded and if I would still like the goods I needed to re-order. The goods I ordered was part of a promo which was no longer valid at the time of this enquiry. No effort got made by the person in 'customer care' to allow me to still obtain this promo, seeing the error was not mine but a system fault. I was informed that i should receive my refund by the end of the day on 29/01/21. By the 30/01/21, there was still not refund reflecting and when i again made contact with customer care, they advised they logged an investigation that would take 24-48 hours. Without checking if I need any further assistance, they just shut down the query and I was no longer able to request any further information. I am a huge fan of online shopping and have never received such pathetic service. I have had issues with previous online orders with other stores but I could clearly commend those people for how they handled in rectifying the situation, which is definitely not something I can say about Mr Price.