There are a few points that I would like to make.
1. The cryptocurrency market is volatile. You may gain 1000%, but you may lose that much faster.
2. Signals do not always work. Signals are just clever guesses based on past experiences. They are extremely ineffective against the volatility of the cryptocurrency market. This volatility was further impacted by the minimum 5x leverage that StormGain asks.
3. You cannot call them a scam for not giving you a refund. If individuals received refunds for their losses, the economy would collapse.
That is it from my side. I really hope you research more about cryptocurrencies, what determines the value and the different technologies behind each and every single coin. If you do take your time to learn, you will be able to start making profits.