There are various synonyms that can be used instead of the phrase "did about it". These include phrases like "took action", "addressed the issue", "resolved the problem", "handled the matter", "dealt with the situation", "fixed the concern", "tackled the issue", "managed the trouble", and "sorted out the issue". These synonyms have similar meanings to "did about it", but they offer more specific descriptions of the action taken. As a writer or speaker, it is important to choose the right synonym that perfectly suits the context and conveys the appropriate meaning.