I had a dispute with Bitcoin Aussie System (unictrail.ru) 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: Clear documentation|Professional team|Easy to use platform
Cons: Alert system is basic|Could offer more webinars