Do yourself a favour and do not waste your time worrying, nothing will happen, take your debt and multiply it by 300 and you will get a rough figure of what I owe to various places. Anyone knocks on my door and I just politely say, sorry not interested and close the door, it really is that simple. I do not know what it is like in the USA but here debt collectors are not ballifs and the only people who can take money or possessions from you are court balifs if you have failed to pay a fine. What you said to them is completely irrelevant, it is no crime to lie to some turd who turns up at your door.