Contact Centre does not answer to assist with e-filing Issues!! WHICH ARE CRITICAL

For 3 Days now i have been trying to get through to the contact center - I got through on the 1st of July as my ITR12 was not loaded - since then every day I spend up to TWO HOURS trying to get hold of the contact center as in my calculation they did not include my medical aid which is the main reason for doing my tax returns. It would be great if someone can call me back so I can get my return sorted before i file it because how it is now is now is totally incorrect. I need to have this corrected in order for me to have the correct refund amount - URGENT ASSISTANCE WILL BE APPRECIATED