Statement API, P/L Statement Error

(i) I want to know about how Statement API Helps in trading and what report it generated.
(ii) Can you also tell when the P/L statement experience will improve as you provide trader diary but it doesn’t much help us much
(iii) There is lot of error in my P/l Statement, where Profit is much more than actual realized (approx 5 times appearing) the quantity is also wrong
(iv) there is DPC Interest also charged which is normally not charged by broker @PravinJ