Bad business class experience

My husband and I flew back to JHB from the UK on Tuesday evening 26 May 2015 on the SA237 at 21:00.<br> Once we were up in the air we noticed the tv's were not working, the guy sitting across from us was complaining his seat wasn't reclining into a bed. The air hostess tried to reset everything and just kept saying leave it, it will come right ... at 2 in the morning I tried the tv again and noticed it was boiling hot. It was worrying me and all sorts of things were running through my head that the circuit board would melt causing a fire and I was confused as they were not working so why would they be so hot. I told the air hostess and she didn't reassure me in any positive way, I was told its normal and that I should basically go back to my seat. This is business class .... I don't understand why these items are not working in the first place. The pilots did a wonderful job with the flight, it was smooth and hardly felt the take off and landing but I did not feel welcome at all with the whole experience.