A dad promising to water someone's garden while they are on vacation and then not following through would be very disappointing and show a lack of responsibility and dependence.
Context: My dad promised me he would water it but when I got back from vacation most of my garden was dead
Hypothesis: My dependable dad totally made me happy by not following up the promise to water my garden while I was on vacation and let most of my plants die.

Is the hypothesis incorrect? (Yes, no, or unknown)?