There isn't one.
Facebook is run by a surprisingly tiny number of people, given its size. A lot of decisions like this are made via computer. I would be very surprised if a human has ever seen your case.
Usually, FB suspensions are for a given period of time, so check when yours will expire (I am pretty sure they tell you in these notifications).
And in the future, I strongly suspect they thought you were uploading too much, too quickly-- which to their program may seem to be a prelude to spamming.
So upload a lot more slowly when you are allowed back on, and see if that helps.