You can call on Cebu Pacific as you follow the steps in the below section:

Navigate through the website of Cebu Pacific, www.cebupacificair.com.
Look for the Help section.
Click on the Talk to us option.
You will get the contact details that will help you to contact them.
You must click on Call center hotlines to call on Cebu Pacific hotline.
You can dial their phone number, +61-2-9119-2956.