Very poor customer service & warranty issues from Willerby

We have a structurally defective caravan which is affecting the attaching side panels that developed last year on our ‘brand new’ 2022 Castleton caravan; we reported this to our selling site as a warranty claim as soon as it arose.
However, 4 months of waiting, chasing and haggling for / with Willerby to actually respond just to get an inspection team to come out and inspect was heart breaking. And then, only on their second attempt during the site winter close down did they try to conduct a repair, but we have never been given a repair report nor any other details of what they had done.
Now that the site has reopened and at our caravan can we see that the attempted repair has not worked and that the side is again significantly bowing and rippling when the sun is on it (and its only 13 Degs).
We have reported this (AGAIN) to Willerby as another warranty claim about the same defective structural issue, and that the attempted earlier repair did not resolve the ‘original’ structural warranty claim, but Willerby has not provided any reply in over three weeks now.
Seriously, we do not want another summer of heartache, stress and worry like last year over this defective structure and the bad customer service of Willerby like we had last year, without any feedback from Willerby (AGAIN!) and how it intends to resolve the issue.
Willerby needs to up its game and improve both from a customer service perspective, its post sales repairs service and with its build quality control.