Hi Fluff ! er have you a slightly shorter name we/I can refer you to as its a bit long for my feeble finger to type
I appreciate you were and are serious, its just that it seems so farcical, the job is what I do and I have in all honesty barely seen worse in near on 40 years(excluding home brews where its not an issue)
I can 99% guarantee that certain things havent been done,
as for fabricating parts, well it is often better than some of the non original pattern stuff, yours doesnt even fall into that catgory, anyway enough of that, you are unfortunately aware of whats happened and I hope were not rubbing it in.
how you proceed is indeed difficult decision, I would look to wanting the majority of my money back, but I somehow doubt that turning up on their doorstep will acheive this, others may have better advice, for certain they would not under any circumstance touch the van again for any purpose whatsoever.
How recently did you have the 'work' done, how long did they have it,when and how did you pay,
if you like pm me rather than discuss this to the wider world including maybe the perpetrators,
mm