Better to go through the airline direct. Many of the online agencies have closed from the Covid-19 pandemic and people cannot even contact them for refund.
as far as I know all of those countries you listed are closed and not due to open for some time. Things may have changed, but most foreign travelers are not able to enter. Even flying to Australia is limited to 9 flights of 50people per day from all countries. Just hang in there mate, get smart traveller alerts. They come every day about relevant countries. Good luck mate.
as I stated in an earlier comment, I took my Thai wife and she did all the talking. It was 3 different branches of SCB bank. I will try at another company. Thanks for the comment.