No communication

Called Samsung to come and have a look at my Dishwasher as it was giving a code E3 error, as the technician arrived he said that it is a difficult repair and might need to replace the pcb and they will have to take the machine back to the workshop and someone should call me in 2 days with diagnosis and quote. 3 days later i called the repair centre to ask what is going on, with an excuse that the technician is still trying to figure out what is happening and they will update me, another 2 days passed and i called again with an excuse that almost every part has been replaced and that they have spoke to samsung head office and need to order a filter to see if that will fix the fault. 2 days later and called them again and they said the machine is on test and they will come back to me. another day later and called them again and they said machine is working and they can come and deliver, i asked them so what was wrong and what is it going to cost, they said the pcb and switch was faulty and was replaced and it will cost R1,200 to be paid on delivery. 2 days later and still no delivery. after calling them again technician comes here within 30 minutes with my machine with new dents and