Well Relax slots are known for its volatility though but Deadwood from No Limit City is probably the most volatile slot ever.
Agree, I play once and banned that game from my slot game. 
Lol, I feel you, i have been getting lots of reds (loses) on this provider, probably due to its game being high to extremely volatile.
Anyway, for deposit you guys should check finally CHIPPS add (+) button for a deposit on in the right balance.
This additional feature brings a lot of conveniences.