If you want to play, send a letter requesting re issue for you expiry of current issue or provide a 1/24th refund. Otherwise ask fair trading what they think of this blatant ripoff.
I had similar, thought I'd be smart and renew mine a month late as didn't need it, pin on renewal was good for one or two months after due date. I sent my late bit of info to allow processing 2 days into month. When I got it it was the month before. Just a bunch of cunning so and so's. As I was late did not do above and was a month overdue when I renewed, just stretching it out. Cheers and best regards mate.