Evidence is NO WHERE NEAR enough to remove neg feedback, it shall remain 
Of course, do as you wish, when the 13 btc is paid back you can all remove it.As for this:
https://blockchain.info/tx/86e500c12af5e2123da28f489da62ab6a7409d66d44a1bc50661d532072d1e82
This payment is VERY old and no scamming happened in that round.
I was one of the first investors in that round and wasn't paid, though I should've been, even acknowledged by you or your business partner, who promised to refund us falsely not paid out investors:
Tx_IDs of investments:
https://blockchain.info/tx/7c71bbf7029efd6e4ab24dc7901187844bb8ed9e04fb972c32cff51e3f0ca1fa
https://blockchain.info/de/tx/f9d45e279cacb152c5198680777f69ad232385b0bdedda892fc1155b3cb97fa7
https://blockchain.info/de/tx/1fde6df09a3e32fd4600f91ad5cbdf76206829f818c6ea9251bd0dbca7faef7b
https://blockchain.info/de/tx/1ecb83473ec78f2e3c82e6b02da57af0b54d17a20733bf40288294cd04b7d2be