Qantas no Service!!! No e-mail! No telephone!

As I write this review I have been holding on for Qantas for 48 minutes. This is the 9th call I have made in two days. I even set my alarm for 1am to see if I could get through, to no avail. I have tried to send countless of emails, only to have them bounce back! I understand that there is panic in all airlines due to all the travel restrictions being put in place all over the world, but surely someone must at sometime answer the phone? We fly to New Zealand from OR Tambo every year to visit our children and grandchildren. We always look out for Qantas specials and book online direct. When Qantas had a special in November last year, we booked to depart on the 3rd April 2020. I always pay for the extra leg room seats as well. Our daughter is turning 40 this year so we saw that Qantas had another special in January 2020 on their flights and booked a flight for the 7th November 2020 as well. Now my problem is:- you can go onto their website and get a credit voucher for a year, but we already have tickets for November this year as well, and we can only fly over to New Zealand next Easter (April 2021) so that takes our credit voucher to over a year. and the credit has to be done by 31 March 2020! It is not our choice to cancel and we are obviously very upset as are the children and I am sure there are many more cases like ours. But surely there must be someone who can help us? It is alot of money - I am very disappointed in Qantas.