Holidays booked for Thailand which was cancelled by last minute and thai airways during the pandemic. We selected that a travel voucher be sufficient to replace the costs. However this was pending for 12 months and now has been told is non-refundable despite assurances that travel voucher would e fine. We also took out full flex cover with last minute to cover the flights. Last minute just have an email contact in which there is an automated response. We have contacted thai airways and they are happy to provide a travel voucher but we cannot get it directly it has to be approved from last minute as we have a contract with them. Obviously we cant as we cant speak to anyone to organise this. What can we do? Its a lot of money 1600