HOW TO FOLLOW UP THE REFUND STATUS
OF YOUR CANCELLED CEBU PACIFIC FLIGHT
You can request your refund's status through the Guest Feedback form on the Cebu Pacific site: https://www.cebupacificair.com/pages/guest-feedback.
When you fill out the form, under Type of Feedback, select "Request". Then for the Category, choose "Flight Cancellations/Changes Options". Indicate the booking reference number of the flight for refund. They reply via email.
In the email, they will inform you when they processed it. And from my experience, you can count 5 months from the date they processed it, until they refund it in the same mode of payment you used to pay for the flight. I paid by credit card and they refunded it to my credit card.