I have been waiting for my refund for two years (the flights in April 2020 were cancelled due to the pandemic). I booked through Kiwi to fly with TAP. After waiting for a year, Kiwi gave me vouchers to redeem but I found out that all the vouchers do not have values in there. I called Kiwi and they asked me to contact TAP and TAP asked me to contact Kiwi. I am the paying customer but constantly have to be a messager between the two.How can you give customer invalid vouchers as a mean of a refund.