Engineering issues cancelled Jetstar flight fron Bali to Perth on March 8,2019

Our flight JQ117 was cancelled on March 8,2019 after the Nyepi Hindu New Year. Our internet were down and we have to stayed all day in hotel due to the Nyepi silent period. When we arrived at the BALI airport, we found out the flight was cancelled. There was no Jetstar flight available until Sunday(10/3/19). We have to rebook by paid $600AU for Air asia flight.

What is the engineering problems for Jetstar?

How does Jetstar have so many engineering problems for their flights?

Jetstar even sent us emails to buy more baggages as stated any items will be weight during check in and no personal items! This is first time we were told that personal items need to be paid.

Rubbish low cost airline. We will never fly with them anymore.

International
Indonesia-Denpasar (Bali)
Australia-Perth