If you need to cancel your trip, notify any travel providers (airlines, accomodation, tour providers, etc) of your intention to cancel.
Make sure you check whether your travel providers will refund you. Sometimes, they will return deposits, fares, etc., depending on when you cancel and what your original contract states.
If you aren’t reimbursed, then check certificate of insurance and the Policy Wording to see whether your circumstances are covered.
Once you have done this, and you intend to claim, you’ll need to obtain and supply confirmations, refund advices, and terms and conditions. We request these for lodgement of your claim.