Samsung / Tv, Microwave — Faulty Appliances and services

We had purchased Samsung Microvawe and Samsung TV around 3 years back approximately from Vijay Sales, Kandivali. Last year our microwave stopped working. We called Vijay sales and they sent us a Samsung authorised mechanic. He replaced the front panel of the microwave with the original one from the company. This year too Microvawe has stopped working. This time the mechanic entered out House and said that we will first have to pay Rs 275 for repairing, then only he will touch the microvawe. After inspection, he said that the front panel and the panel board is faulty and both needs to be replaced. He left without even properly closing the back panel of the Microvawe. We paid Rs 275 absoultely for nothing. The mechanic just entered our House, switched on the Microwave, opened the front door and after seeing the glass moving, he said that the front panel and card is not working. Just then to console us, he opened the back panel. Every year we are spending Rs 2000 approximately to keep our Microvawe working. Similary many a times our Samsung TV blanks out. Is the Samsung trying to loot us by giving faulty products? We have Siemens, BPL, Videocone and other company products which are working properly for so many years.