I have an explanation for you. I have recently moved house and do not have internet access there, therefore my internet access has been sparadic and limited. I have not taken the time to read the chat because of this which is why I have not responded.
The reason I have been attacking you is because you have been the closest player to me with bonuses which can be taken. Also you should note that I have been attacking other players as well as yourself in order to reduce their bonuses. It isn't anything personal, it's just the position you are in the map.