I want to share my experience with customer service.
For all my questions, I received answers in shortest time possible. Here example.
Once I duplicated payment by mistake. I did not know what to do and contacted support service. My account manager told me to request withdrawal. In the end, money returned to my debit card within few days. Manager explained to me that if I accidentally funded my trading account in future, I should withdraw money in usual way. So now I am careful with my funds!
In all other situations, I also received help from my manager.
In my opinion, customer service is very professional.