Some people!

[cromwell]

Just down the road from us there is a dog training business. It does quite well, I suppose because of all the dogs that people are buying these days.
Or it was doing well until a few weeks since.
The police received a tip off that the business owner was growing cannabis (a false allegation) and raided his premises. What happened next was one of the business owner's former employees who has started a competing business, rang round all his ex-employers customers using their contact details that they had copied whilst in his employ, saying "Do you realise that the police have arrested X for growing cannabis?"
Result, X loses 40-50% of his dogs.
How dirty a trick is that?

[Kaz]

Slanderous! They could sue, but I should imagine that’s a very expensive business these days An absolutely disgusting trick, and I think we can all guess who made the false allegation

[Ally]

Oh that is just bl**dy disgusting Crommers!

I hope something can be done about it.

[JanB]

That really is disgusting behaviour

[meriad]

that's shocking and goes to show just how low (desperate?) some people go

Thing is if the previous employer didn't have a contract with his then employee that specifically said s/he wasn't allowed to copy client details then I don't think there is much he can do about it.

But then talking as a pet owner - if I was a client I'd go to whoever I trusted most with my pet so if all those people happily moved away then one does also wonder why?