Following are a number of back-translations as well as a sample translation for translators of Jeremiah 6:10:

• Kupsabiny: “Who can I tell these words of warning so (they) would turn around and listen?
  Who would listen to me among these people who do not listen to anything?
  Look, (they) have made themselves deaf
  so that they do not want to listen.
  These people hate
  what God is saying.” (Source: Kupsabiny Back Translation)
• Hiligaynon: “But whom shall I warn, LORD? Who will-listen to me? They covered their ears so-that they could- not -hear. They detest the word of the LORD, therefore they do not want to listen.” (Source: Hiligaynon Back Translation)
• English: “Then I said, ‘If I speak to the Israeli people to warn them,
  who will listen to me?/No one will listen to me.
  It is as though their ears are closed,
  and as a result they cannot hear what I say.
  They scorn Yahweh’s messages;
  they do not want to listen to them at all.” (Source: Translation for Translators)