The negative trust is about as ridiculous as the notion that anyone who is familiar with Vod will take his opinions seriously.
This is one more example as to why the trust system has become worthless, along with the fact that the admins will not step in to address a situation in which there is very clearly no trade dispute, nor any attempt/plan to steal money/property from others.
The world is not flat, and there is substantial evidence to back it up. The appropriate course of action would be to present said evidence, not attempt to silence the OP via a negative rating. And yes a negative rating is very much an attempt to silence the OP, especially in this case.