I accidentally shipped 2 different packages with the same tracking number / label, need help

[sacajos]

I accidentally shipped 2 packages to the same address yesterday after an ebay sale (I use the same label on 2 different packages). They weight about the same, give or take an ounce or so. I did a usps intercept form online just now but since it's 2 packages with the same tracking number, im not sure if they'll intercept both .  It's going from the east to west coast, so there's time but im not sure what else to do,to ensure both are intercepted & returned to sender (me), since they both have the same tracking number 

[ebooksdiva]

If they were USPS you can do a package intercept on them, but this service is not free. 
ETA sorry i missed the part where you already did a package intercept. 
Talk to the Post Master at your local post office about your situation.

[simba6]

Are the the wrong items that are going to that buyer?  If not, I would have just  done nothing.   Hard to say what will happen.  The USPS system is not " bullet proof " when it comes to using a dupe label.  Many just make it through.   The 800 number on the USPS web site can pull up a lot more tracking info than what is on line.  However,  I don't know if they are there on weekends.