I don’t think this is surprising news to anyone: the North Pole Post Office is just swamped. I tried calling to speak with Elf Hugo but he is so busy he cannot even answer the phone.
If you want, you can call or text your late wishlist to Santa for free at JingleKringle.com. Using that North Pole service could take a little pressure off the post office.
Over on Kringle Radio, they were just dicussing the use of stocking mail, too: