Or, if they call while you and Russell are both there, don't answer the door, but shout to each other something like this:
You: OUR IDIOT NEIGHBOURS ARE AT THE DOOR.
Russell: KEEP QUIET, THEY MAY JUST GO AWAY.
We did that with Jehovah's Witnesses a few years ago. Worked a treat.
The woman just came down an hour or so later and asked if I had a parcel. I just said yes, cheerfully, and handed it over. I wanted it to be the chap.