Peter England — not given discount in old stock and insulting behavior by shopkeeper

I purchased three shirts from satna (m.P.) retail outlet . Manufacture date was 09/2015, 06/2016 and 07/2017 . Invoice no. F113701i18000902 dated 15/12/2018 amount rs. 3997. As the stock was more than i year old but no any discount given to me by the shopkepper . And he behavior was very rude and in very insulting manner . I request you to provide me discount and take action against shopkeeper . From v.K.Rajpoot satna (m.P.)