newdigital, thank you for suggestion. maybe some day I will open my thread there.
but my interest in this thread here is to exchange with other programmers the names of unreliable clients. I think the thread for my services will not be the best place for this.
and clients can exchange here information about unreliable services.
it would be better to have everything in one place, than spread accross many commercial threads.
let's see how it goes. if there will be no interest and discussion here, then it will mean that local community does not need such info and you may delete this thread in few months after last post