these methods work with some debts , but not with companies where you are not dealing with the actual person who owes the money,, my old flat mate/best mate is a debt collector,, he tried to collect a debt from a building company and is now doing 3 years in prison,, he never layed a finger on anyone, its just for the "very, very subtle quiet word" he had with them
again not trying to sound like anyone special...BUT..the way I see it is this in every company/organisation there will be someone who ultimately has the nod for paying or not paying...
Once this person has been identified...the rest is just a formality...the quitter the word the more impact from the correct people...
again not trying to sound like anything special im not...but genuinely if you know people these things can be sorted...for 19k theres people who wont even raise there voice and would take a 2k cut just for mentioning there names for 5 mins work...