Hey, what are you complaining about?
At least they told you!!
A summer or 2 ago, I made a reservation from sacto to steamboat springs, via denver. UAL cancelled the den-steamboat leg and never told me. We found out when the curbside baggage handler couldn't tag our bags all the way to steamboat, and had to rent a car and drive from den. After many calls we got a partial refund and some vouchers.