You should stop buying from that place then and tell your friends about it.
They will supply shops as long as the shops will sell their plants. A lot of people don't know how a sick cactus looks like, or if white fluff is a bug or mealybug.
Many people buy painted plants thinking it is their colour. Or with glued/pinned dry flowers also thinking it is the real flower.
As long as there are customers - they have no reason to be more careful.
Unfortunately, I cannot refuse this cattery ...
There are very few of them in Cyprus.
They will always have buyers.
And the shops will not refuse them.
This is the situation here .... :-((
And plant nurseries are not checked :-((
In Russia, it would have been closed long ago, after the very first check.