Wrong priority date :(

Dear all,
I got my EB1A approved in August but I just noticed that USCIS didn't port my earlier priority date to my EB1A, which should be in 2014.
How do I get this corrected?

to Deann:

Hi friend,
Not sure if you already got this corrected, but you can make a service request and ask USCIS to correct it.

to Megan:

I heard you can also call USCIS and ask the agent to help you?