If I ever have a nemesis, I'll need their postal address. Then I'll send them letters and parcels but without paying the right postage.
My sister is generally not paying attention. She once received a wonderful letter from her bank that said something like "Thank you for your change of address notification. Unfortunately we have been unable to action this as you didn't include your name or your account details".
When she visited me recently she somehow accidentally took a radiator bleed key with her when she left. She texted me a photo of it and asked if I wanted it back. Yes Please. A couple of weeks later I got a snotty letter from Royal Mail about an item addressed to me that didn't have the correct postage paid. About a week after I paid the excess (and a handsome handling charge) I received my own radiator bleed key through the letterbox. Poor value - would not buy again.
Richard "Amazon Composite" B