SAA Flight changes

I am due to travel to Venezuela on the 28th of November 2015 with SAA. Upon the original booking the flight was scheduled for the 28 at 23.40 and arrive in Sao Paulo in the morning allowing me to catch my connecting flight.To my surprise when i went to the airport to fetch my ticket i was informed that the departure date had been changed to the 29th and due to arrive at the same time as my connecting to Caracas. After a long battle with the customer care service my ticket was changed to the 28th at 11.15am which meant i would have to spend the evening in Sao PauIo.<br> I have now received an email notifying me that my 10 year old son who is traveling with me on that day has been moved to connecting flight due to leave Sao Paulo on Dec 1 and it seems non of the customer care attendants can provide me with a reason why. What is expected of me instead is that either me or my son spend 3 days Sao Paulo because SAA is having another scheduled change. I am not at all happy with the fact that SAA repeatedly reschedule flights without any consideration for their passengers. I am due to be in CCS by the 30th but due to SAA's continuously inconsistent schedule i doubt i'll be able to leave SA