Typically when you do a re-fi, the first month of interest is included, so you can "skip" a payment. Also, sometimes insurance is re-loaded. Other suspects might include a new title insurance policy. Also, check to be sure, but I'm guessing this is an estimate ate with a lot of standard boilerplate stuff listed. A little diligence on your part should get most of the garbage removed.
You could certainly refuse to sign, but check the long view after examining the details. You might still come out way ahead with the new interest rate.