Demps, be aware that this forum isn't associated with Taurus International, or Taurus Brazil. It's just a forum for Taurus firearm enthusiasts. That's not to say that their employees haven't dropped in and looked around before - I'm sure they have - but this isn't a good place to send a letter to Taurus.
In many ways, you're preaching to the choir. Everybody here, or most here, are fully aware that there are serious issues with Taurus customer service. If I were you, I'd send the letter to somebody in Miami that can maybe action your concerns.
Good luck, and welcome to the forum !!