Returning buyer orders wrong gig and doesn't upload needed files

[zenter]

Hi, today a returning buyer (I’ve done two works for him and he’s a V.I.D.) ordered the wrong gig (he wants me to mix and master a song but he ordered the beat production basic package), he also writed down the requierements but he didn’t upload any file, he needs me to mix a vocal into a beat I already have but I can’t do anything without the files he didn’t upload. He even writed what he wanted in the requirements box and because of that the order timer started going down. He doesn’t answer my messages, what should I do?