Umhlanga Service Centre Disappointing customer service and shocking experience. Find another service provider!!!

We took in our TV with a blank/black screen issue at the end of February and when we arrived at the Umhlanga service centre the guy who assist us took the TV, plugged it in for a high level check, he concluded that the TV was switching on and the issue had something to do with the back light/bulbs but would have to do proper faulty finding. We were then told to pat R450 for this, and they would call us in 3-5 days to confirm what the issue was. And as proposed a few days after dropped off the TV we would to fixing the issue would be R2741 less the R450 and we had to make payment and send the POP and as requested we did so. We were then asked/told to give them 3-5 days to fix the issue and we would be contacted to collect the TV however on day 5 we got a call that the TV was no longer switching on and an R8000 something was needed. This confused because we were told the 2741 was final and there would be no additional payments. I then proceeded to contact the Sales Rep (Wezley) to get clarity on what this amount was as the technician did not. Wezley asked me to give some time to investigate he will get back to me this was on Monday( around 4PM) obviously this being around closing time I then let the whole of Tuesday run without calling then around 3PM I called and was told Wezley is busy with a client he would call me back. I left my details with the lady who anwered the phone And to this day he has not called back and when I call he is either busy ,with a client or on lunch and will call back. ALL WE WANT TO KNOW IS WHAT ABOUT TO OUR TV BECAUSE WE LEFT IT ON FINE AT THE BRANCH, WHY IS IT SUDDENLY NOT SWITCHING ON.... AND AT THAT WHAT PART IS THIS THAT COSTS ALL 10000 PLUS(the price of a new tv) can we not be sent from pillar to post and get answers. When our family brought our TV in think you are reputable...Saying we are disappointed just not even scratch the surfaces....ANSWER US PLEASE WHAT HAPPENED TO OUR TV WHILE IN YOUR POSSESSION....