I had a dispute with Global Hubz (global-hubz.com) and went to their complaints process. They have an internal team that just defends the company. Then they said I could go to an ombudsman - but the ombudsman they use is industry-funded and rarely rules for the client. The system is rigged.
Pros: Instant funding|Competitive fees|Fast execution|Helpful community forum
Cons: Slow to add new assets|Minor UI glitches occasionally