Robosats, is peer to peer, you choose to release the sats, not the escrow(Robosats), it is about you and the other peer. These type of scams ,happens after a trade is concluded. Fiat has been sent , sats are released, the order on Robosats is concluded as succesfull, Robosats coordinator keeps 0,02 , 0,01 % for some coordinators as fees, and then there is a chargeback request. In case of a dispute, one of the two peers ,maybe has not received the money, or has sent fiat and the other peer has not received. The order is not concluded succesfully, and the coordinator in that case has to decide, with evidences provided by the two peers.