Lenovo — faulty laptop ideapad 3

I bought my laptop Lenovo Ideapad Core i5 7th Gen (8GB/1TB) from Flipkart. It was delivered on 27 Jan 2018. It came with stickers on its corners and a temporary screen protector. Since May I have been facing the following issues in the Laptop:
1. The Keypad would stop working
2. Auto-type many letters and the F column
3. The touchpad would hang
4. The system is painfully slow
5. And suddenly it would start working like nothing is wrong with it.
I have called the customer care continuously after my exams got over. At first, I manually corrected everything as they directed me on phone. It took 3-4 hours. And after that, when the issue persisted, they sent an engineer. On the phone, they said there might be a PROBLEM with the KEYPAD. The laptop was working fine on the day the engineer came. I took off all the stickers that were on the keypad- one in the extreme right corner was of blue colour with some kind of design on it. The corner was CHIPPED.
His conclusion after checking the laptop thoroughly was: There is no issue with the laptop. It is an electronic item. There is nothing to be worried about. The Laptop is fine.
But, after 2 days the same situation occurred, and I waited for it to get back to normal. It went back to normal. The laptop was working fine. Then it again stopped working after 2 days.
I again called the customer service. They would keep me on hold and eventually cut the phone. When one of them finally picked up, I again complained about the same situation. At first, they again wanted me to do it, but I strictly asked them to send an engineer with a KEYBOARD. They have to CHANGE the KEYBOARD.
The second engineer came. He opened the laptop, and said, "It is damaged. I CANNOT change the KEYBOARD."
He did not even check anything and left.

I again called the customer service and they said it cannot be done because the Laptop is not under Accidental Damage Insurence. I continuously told her that the chipped corner was always there, and finally, she asked me to take pictures of my laptop and email it. I emailed all the pictures, but never got a return call. Then I again called the next day, and they DID NOT SEE THE EMAIL.

First of all, the LAPTOP has never fallen. It is our first laptop and we are very careful about handling it. When not in use, it is always in its bag. I never took it out of the home. Never dropped it. The chipped corner WAS ALWAYS THERE. I saw it for the first time when I removed the sticker.

The company is blaming the incompetence of this laptop on a chipped corner. I am not an engineer yet, but I know enough that it is a HARDWARE ISSUE. They are trying their best to get out of this complaint.

If my issue is not solved by the company, I will file a complaint in the CONSUMER COURT, and please be ready for a LEGAL NOTICE to come. I am FED UP with the BAD SERVICE, and I am not going to call again and again only to get my phone call hung up.