Chess Tactics Volume 1, 2 & 3 - Double Attack, Pin, Fork etc - 12 Topics and 600 Puzzles to practice - A set of 3 books

None of the books had any of the puzzles segregated as per the categories as they were claimed to be. Each of the 3 is a mixed set of random puzzles which defeats the purpose as I bought it under the impression that each topic for every tactic would be separate and effectively organized (that's what the product bio and pics advertised). Books didn't even have an index page, no author name etc.