JO: The biscuits are tim tams- irresistible! I'm eating them now lol. They left them with me and said I owe them a cup of coffee next time they come round.
If the cookies are that good, you should at least have let them put a foot inside your house before shutting the door on them.
Next time they come around (and it sounds like they will), set up the coffeemaker on the front step, close the door, and let them drink it outside. Make sure the coffee is of the same quality as the cookies. Fair's fair.