R205 + R50 voucher not working

I bought an Uber eats voucher for R205, and when I tried to place my order it gave me an error saying that "an error occured and i should contact support" this isn't the first time this is happening, on another account I bought a voucher for R50 , and the same happened , and when i do contact support via the Uber app or via Instagram or Facebook I get the same coppy paste responses that aernt even related to my problems, I am livid and utterly disappointed