You are a liar and a crook.
In Brazil, one must be wary of everyone and everything and you knows this because you are Brazilian.
In Brazil, no one would buy a used equipment that cost more than 6.000 R$ on a website without taking basic precautions, such as going on site to check the status of what you buy.
You say you are an innocent victim, this is not true.
You bought this equipment in the full knowledge that there was a problem, you take risks and you lost.
You are fundamentally dishonest because you use your errors to try to win the jackpot by blackmailing.
No, you do not want just that VE will refund yours 6KR$ !!!!
You want a new Mantis Elite which value in Brazil is more than double of this money.
The proof of your dishonesty is obvious: you have all the facilities to resolve the problem quickly by appealing to the PROCON, but you did not.
Instead, you come on a forum publicly sully the name of VE to blackmail.
Your attitude is disgusting and instead of VE, I would not do any favour for you, you do not deserve it.