I just got told I can’t take anymore time off as there will be more work coming in for all of us. I’m a casual.

Just note that I am low-key happy I'm getting more work cause it means more money, I'm just annoyed cause today I was pulled into the office and was questioned about some upcoming holidays I got, which was approved, and was asked if it was necessary to take time off. And this was to do with family as well. Afterwards I was told I couldn't take anymore time off as they need me for the upcoming work. Was pissed off for the entire day.