We had this for awhile when Royal Mail switched a load of their posties to agency staff (maybe 2003ish?).
Was living in a big house share of six people, which obviously generated quite a lot of post, and one day our delivery stopped completely. Phoned up and they said they’d look into the problem and sent us a massive load of stamps as compensation - as per The Office, they say you can use them as currency but I almost got my face smashed in from a minicab driver trying that.
Anyway, from that point on a word obviously was indeed had as we started getting the post for every house with the same number as us for about a dozen surrounding streets. We would literally get about 60 letters per day. I used to save it all up and then go deliver it myself on a Saturday morning like a part time postie until they sorted it out. Didn’t get any more stamp compensation though sadly…