Hello, is that Mrs Jones?

Misdirected mail is commonplace, and usually presents no problem. Envelopes addressed to "Prof. April McMahon" are redirected in a trice, and parcels addressed to "Dafydd Raw-Rees", postmarked Todmorden, likewise present no obstacle.

But today arrives an envelope addressed to "Mr and Mrs Jones".

FFS. I've just counted and there are over 2500 "Joneses" in the Aberystwyth phone book, and it's a slim volume.

This is going to take ages.