I spent a long time up at the Prescription Pricing Authority in Newcastle designing the system that's handling the EHIC. Was an awful lot of work, but kinda fun - the forms are scanned in, then processed by a computer wherever they can be using OCR, then verified by humans who have the very boring job of reading and confirming that the computer has read your form correctly ;-)
Anyways, anyone who has filled in an E111 form since about the start of this year and has ticked the box saying that they want an EHIC should get one automatically. However I guess it's always possible that the human verifying your form simply clicked the wrong box, or the computer missed the tick and the human didn't notice. You should get the duplicates in time though.
Having said that, your E111 is valid and you don't need the EHIC until next year so you'll be fine. I envy you Pammy, I wanna go to Italy for a bit!
-simon