Giving a bad rep without made any transaction with me is just unfair man.
That's not unfair. You are judged by what you do and how you behave. You are asking to borrow money which you plan to invest on a financial endeavour with a less than 0.01% chance of producing an ROI. In addition, you are asking for this loan from behind a wall of near-anonymity and without risking any collateral. No one is giving you "a bad rep" but yourself.