DB Vaello often don't reply to emails or reply with a boastful attitude.
Most importantly, despite the high price tag of their software, they couldn't prove that their software can generate profitable result on a weekly (or even monthly) basis!
This shouldn't be a surprise, since 99.9% of the trading software/classes are scams; they can never demonstrate to you how their products/services are consistently profitable. In other word, they make a lot more money selling these useless "trading tools" than actually using them.
The only way to proof that a trading tool/class is truly useful is to hold a live trading room every weekday, and trade a real account (not demo) in front of the customers.