Contact Centre that picks up call and do Nothing

Jetstar has totally lost me as a consumer. It's my first and my last time.

My flight got delayed for more than 6 hours and now I am trying to call Jetstar to request for my insurance documentation. I have called more than 4 times and until now, they did not give me a reply nor have they sent out the letter for me to make the claim. The insurance claim is SGD200 and because of their terrible horrendous service, i think I'll never get this claim done!!!