System does NOT work. NO after service. Now what?

After responding to "Groot Ontbyt" ad, we had the system installed about 4 weeks ago. Ever since we have tried REPEATEDLY WITHOUT ANY SUCCESS to make contact or get help from the company. Our system DOES NOT WORK and unfortunately we paid the full amount up front after signing the order. We have sent emails and contacted several people repeatedly but hence no success. NOT ONCE has anyone come back to us. Why should they - they got their money. After some research on Melton van der Merwe and E-Engineering (which we probably should have done BEFORE we signed the order and payed R100,000) we got to know that many many many people have exactly the same issues. So, we are stuck with a system that does not work and no indication at all that anyone from the company are willing to help us. Is this not ***** and/or theft? It also seems like G Carbon and GC International has either been previous companies of the same person(s) or are linked in some way. It seems like something Carte Blanche would be interested in if I look at all the issues of MANY people and all the losses involved. I am willing to give E-Engineering ONE week to get into contact with me to fix our system or we will surely add our voices to many other by taking this matter to the National Consumers Commission, Carte Blanche, social media, etc. I have NEVER experienced anything like this before - it cannot even be called bad service, since there are NO service! How is it possible that companies get away with this for so long? I know they have even recently been part of the Home Expo at the Waterfront, Cape Town. How many more people and complaints before something changes? Where has integrity and honesty gone?