Money refund due to Covid19

I have send numerous emails regarding a refund for our airline tickets at Air Mauritius. Due to Covid19 and Mauritius closing their borders before we could go on the 22nd of March we still haven't received out money back from the airline. They have offered and EMD but as I explained I am a teacher and with the current lock down and schools not opening I can't make any travel plans for the future. My husband works at the SAPD on the front line every day with Covid19 he won't be able to get annual leave in the near future. And even if I get a holiday and he gets leave there is no guarantee that we will be able to go on holiday together due to our respective occupations. It takes a lot of planning for us to go on holiday as we are not able to always get a holiday at the same time. It is not due to us cancelling our trip but circumstances out of our control. We just want our money back please.