Poor service from BW

On October 23 2023 I bought 11 trays for window boxes from BW Willoughbridge on the internet. After numerous emails and telephone calls in December they advised that they did not have the items in stock as there was a stockholding error on the web. No one seems to be able to tell me when the items that I paid for in October will be delivered to me - surely these trays are available somewhere in South Africa? I am merely told that "you will get back to me", but no real information on the status of the order. On Saturday I visited my local store in Tokai and I was promised someone would revert today. As of 15.00 - no call. I previously purchased the window boxes themselves from various stores, but these are of no use without the trays. What are you going to do about this?