The big question is
Was your report thorough and detailed
You can send tons of reports about one guy just telling them "this guy said this to me today" and something might not happen because you were not thorough enough.

Im not saying that is exactly what happened but do make sure when you send a report to add things like the date, time, server, exactly what happened, and things like screencaps can be very helpful as well.
Im only saying this because Ive seen plenty of people complain about someone not being banned after they sent in lazy reports