[Daffodil]

Abz made it clear in the last few episodes of CBB that he didn't like Carol (who does?). Carol mentioned to Lauren that she thought she had done something wrong because Abz just walked away from her. Lauren said she would have a word with Abz, which she did in the tree house. And Abz explained that she had 'something to say' about every housemate. In other words she bitched every day.
That, Carol, is why you interpreted his behaviour as rude, because he saw it like it is!!!!