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@anupbose, you can calculate the ROI of your bid for any bot on the tracker website. The round you have bidded in has got more bids... And you might know well, higher the bid amount, lesser the profit.
I could have returned your bid if there would have been something wrong on my part... It is all your miscalculation... Bid for an already casted vote cannot be returned. No policy for that ... Sorry!

I will not use this bot from next.