Actually I did that with my FedEx driver, and after about 5 times, I had a new driver. They told me they fired him; I wasn't the only one with complaints apparently.
So it may not do anything, but it definitely doesn't hurt to complain.
Oh, and what a gorgeous girl! Can't wait for some post-shed pics!
P.S. Love the cat, too! I have a little tuxedo cat who likes to get into mischief just like yours!