Pathetic airline

On the 20th of March 2020 I was going to travel to Italy via Kenya airways. Italy had announced that they went into lock down. We were obviously unable to travel. We had canceled the tickets because they said the voucher to travel was only available until September. Due to work commitments and the soaring numbers of Covid 19 cases we did not feel safe to travel in September. We then heard that Kenya airways had extended the voucher until June. However, they are now stating that because we had booked a non refundable ticket we cannot get a voucher or a refund. This is one of the most pathetic airlines with absolutely poor customer service. I am appalled that they have now pocketed our money and feel no need to provide any compensation whatsoever.