BAD RESPONSE OF REPAIR TECHNICIANS

I bought a Samsung 14 kg washing machine/drier combo on 30 March 2015 from Dionwired Boksburg. I did not use it immediately as I was having cancer treatment. I started using it at end June but the drier does not work. washing stays wet/damp. Contacted Samsung Cust. care. got a ref. no. Guys came out, fiddled with machine declared it sorted. It wasnt. Phoned in again got another ref. no. waited 8- 10 days for technician to pitch up at 16h00 today. He fiddled, tried to loosen/remove some part, couldnt, as it is the first time he had to work on this particular model. Has to order the whole unit will take 3 days. My worry is that he does not know the machine, he fiddled, pushed, pulled and tried to remove the part. It is an electronic machine. How many other electronic components got messed up in the process? Paying so much for a machine and it is not working. I expect at least for the machine to be replaced with another one.Lost all confidence in this machine and the manufacturer. After many phone calls requesting action to be taken, the repair man pitch up late in the afternoon. I waited all day and one would think after so many requests he would have made mine a priority.