Sadly, only a government can 'print' the money to deal with this situation as part of an integrated rescue/pump-priming to re-establish the interripted cash flows that have been used to pay furloughed employees, pay plane leases, maintenance, storage etc - this across the broad economy. The airline simply does not have the money to refund you - the entire broad national economic process has been shattered. They will have to simply print the cash to make it run and deal with this later.