How do i handle unbalanced Text classification

HI Team,

I am classifying Resume text for different categories and for one of the category i have very few rows(Unbalanced data) how do i handle this situation i have duplicated the rows but unable to get correct predictions. can i duplicate the data for the specified category? please suggest me best possible solutions to deal with unbalanced data for Multi class Text classification.

insights much appreciated.

Regards,
Tony