Today I have meetings all day, which I did not know what time it is finished. But I will wait for your message and will send you a message again after reaching home.
Today I have a meeting all day, which I did not know how to complete?, but I will wait for your messages, and send messages to you again after the House.
Today I have a meeting that day, and I don't know what will be done within a few hours, but I will wait for your message and send the message to you again after the house.