Asus — Bought new motherboard for my laptop

Address: New Delhi, Delhi

I have a asus k53sm laptop that stopped working. I took it to the asus service center in askok bhawan, nehru place, delhi. They diagnosed it with some problem in motherboard. They replaced the motherboard and charged me Rs. 14000 as my laptop was out of warranty. Now in just 5 months my laptop has stopped working with the same symptoms as earlier. I doubt they even diagnosed it right the first time or the motherboard they provided was faulty. How many times do I have to keep replacing the motherboards?