Samsung WD80J6410AS Front Loading with Eco-Bubble 8.0Kg

I bought this machine. I asked for a demo. The demo person came but with no knowledge about how to use the drying function of the machine. It was probably his first installation of this machine, so i asked for another demo. I purchased the product on 23rd Jan and since then I have been calling the customer care but I am not getting proper response from them,whenever I call they tell me that they will send the demo person today, but no one comes and the story repeats everyday. It already 28th today and without proper demo I can not use all the functions of the machine. The same thing happened with my friend when he bought the product. DO NOT BUY THIS PRODUCT Watch demo person knowledge video