Sony India — customer service faulty

Address:

New Delhi, Delhi

i have written complaint to sony many times regarding the faulty customer service they had provided and also called on their customer care but no response i am getting till now.my sony laptops switch wasnt working told to customer service center he charged rs22000 and told that i have replaced the mother board .The problem was still their in the system and also the laptop had a new problem of showing a line on the screen, told him to correct this issue and then give the laptop that person told its your problem not mine, told him we had paid huge amount of getting it repaired and at the time of delivery itself the line was their .Complaint to sony no replies and they keep closing the case.please help me as i have been cheated by sony customer service center which is situated in co-naught place in delhi named f1 solutions