Door to Door salespersons.
Firstly, our street has a number of signs on lamposts warning that Door to Door salespersons aren't welcome so please don't bother knocking. If you do, then please don't expect to get a sale: we don't buy from the door.
And secondly, when my wife says no, believe me no it is. So don't make me hobble on my bad leg to throw you off my property as it hurt me. And yes, I use a term starting with W to describe you and yes, I am more than happy to physically remove you if required.
You made the correct choice of leaving otherwise things would have turned nasty. Finally, the "free Government money" you described does not exist: I checked. Thus, you are a con merchant.