Harry Potter And the Chamber of Secrets

I am reading the book, "Harry Potter and the Chamber of Secrets" by JK Rowling. In this book, at the beginning Harry is stuck at his aunt and uncles house and they are not letting him do anything. Then there is a house elf that turns up in Harry's room and tells him not to go to Hogwarts this year and Doby (the elf) was taking his letters from Hermione and Ron (Harry's best friends) and then to top that off Doby got Harry locked up in his room. But then Ron and his brothers broke him out of that house and brang Harry to their house. But a little later when Harry and Ron are trying to go to the train through the wall Doby closes the portal and their stuck at the train station and you will have to read the book to see what happens next.

I think what Doby did to Harry and Ron was very bad. I know he is trying to stop Harry from wanting to go to Hogwarts but he goes through so much to do it. First Doby is trying to make Harry think his friends don't like him because he's not getting any letters. Then if that wasn't bad enough he just gets Harry grounded and not aloud to go to Hogwarts. Then he also tells him that he shouldn't go to Hogwarts. Finally after all of that and Harry still went to the train Doby blocked the portal to the train, track 9 3/4.