the intended procedure in this case is, that you go to the duplicate entry (for example https://www.themoviedb.org/tv/223951) and there you go to "Overview" -> "Report" -> "Type of Problem:" Duplicate. Into the edit field you have to paste at least the link to the to-be-kept entry (in this case: https://www.themoviedb.org/tv/96121). and yes, unfortunately you have to do this procedure for every entry of your seven mentioned entries.

details and further infos can be read here: https://www.themoviedb.org/bible/general/59f792a29251413e93000001#59f792a29251413e93000003

I know, but that way the message won't be seen by the administrator. Usually, such messages get buried, which can lead to the issue remaining unresolved for nearly half a year or even a year. I think posting it in the general question section makes it more likely to be noticed by the administrator!

CeRu, it's the same for every report - all of them are important, and your report is not more or less important than thousands of reports by other users. It's not right to put reports in the forums otherwise it's unmanageable for mods.