Hi Martin
When you've studied what happens on Trustpilot/Proviation for long enough you will realise that someone (wonder who ?) is maliciously stamping on virtually every negative review of Proviation, with only a few eventually restored to the board when no reason for not doing so can be found. What happened to you is very common indeed.
Their MD is so desperate to maintain a credible front for his company that he's even gone to the extent of setting up his own one-company trade association to whom he can pretend to be affiliated (check out the link to the AEAS on his website).
And yes, I have been personally stung by his company. Wing stands for my glider. Three months delivery. Never again.
Cheers
Pegpilot