Do it! Complain!
The power of a letter can't be underestimated, even moreso in today's e-mail age. For every complaint, a company knows there are thousands, sometimes millions more (depending on the product and distribution) thinking the same exact thing but who didn't take the time to print up and sign a letter and send it in the right direction.
More people need to complain about this stuff. One doesn't have to become a pro-complainer, but complaining is a valid and key component of Capitalism.
;-)