Delta Airlines Changed our HM flight w/o telling us

Out of the blue, I called Delta last night to see how much more I would have to pay to upgrade our tickets to Hawaii from Coach to First Class. When I asked the representative, she said, 'Oh...hold on a second, there has been a schedule change.' Our flights were changed so that instead of a 1 stop layover, there is a 2 stop layover and we would get there 4 hours later than our original flight. To make a long story short - I had a fit and our flights were switched from LGA to JFK - no charge with only 1 stop layover.

MAKE SURE U CALL THE AIRLINES