If you are disrespectful/insulting toward the genie he will not talk to you. (I know from experience). Fortunately when initially discussing the matter with the abashi my diplomat character also had a high intelligence and worked out what the party was dealing with allowing me to complete the quest anyway.
You may have to restart the Temple
Although you will have learned a valuable lesson about saving your game regularly and not randomly massacring creatures. If you haven't play
Morrowind, you soon will.
