Unfortunately you won't be eligible for any type of refunds. Since you left OSBot has gone under a transition to a new engine, this meant that the old products were ceased (OSBot holds the right to terminate any of the services provided when it sees fit without any obligation to the client; viewable in the Terms of Service). The new engine resulted in a new product being released, this meant that all purchases are to be re-made, however in the event that a script was transferred from OSBot 1 to OSBot 2, you are eligible for a free trial by contacting the SDN manager.
As of the moment there is no SDN manager (still being decided on) however once there has been an announcement on it, you will be able to contact them for the 30-day trials.
Hope that solves the situation ^_^