Builders Warehouse online purchase refund fail

I made an online purchase from Builders Warehouse using the Northriding branch. Some of the items were not delivered due to unavailability and would have been replaced with similar items. A few days later I was contacted to tell me there is no stock and I would be refunded. There was also a damaged item in the goods already delivered which was returned with the delivery team which would have been replaced and delivered with the outstanding items. Seeing it wasn’t going to be delivered it was going to be refunded also. I’ve received emails telling me I’ve been refunded but to this date, 6 January 2020, I’m yet to receive the refund. All emails since the 20th of December have also gone unanswered. This lack of service is unacceptable.