I like to think of scolding in Tagalog as existing on a politeness ladder rather than as a single word, and when you want to be formal you climb to words that sound more measured and less emotional.
For formal contexts I usually reach for 'pagtutuwid', 'paalalahanan', or 'pagsaway' — they're proper without being harsh. 'Pagtutuwid' literally means correcting someone and works well in written or official settings: "Nais kong magbigay ng pagtutuwid tungkol sa usaping ito." 'Paalalahanan' is softer and polite: "Paalalahanan po natin siya tungkol sa deadline." If you need a stronger, slightly old-fashioned tone, 'panunumbat' or 'pagbibigay ng mahigpit na puna' carry a weightier, reproachful flavor.
I tend to pick based on relationship and setting: 'paalalahanan' for colleagues or elders, 'pagtutuwid' for formal memos or feedback, and 'pagsaway' when a firmer reprimand is necessary. Those choices keep things respectful but clear—keeps the peace and gets the point across, which I appreciate.