Repairing of mobile phone Issue Xiaomi redmi 3S 4G 2 GB RAM 16 GB ROM mobile

To whom it may concern

Sir / madam,

My wife bought a Xiaomi redmi 3S 4G 2 GB RAM 16 GB ROM mobile phone online on 14 th September 2016 (IMEI 1: 861428032899602, IMEI 2: 861428032899610) .
The phone was working fine until last August 2017.
Then some troubles began to appear (like restarting automatically 2 to 4 time daily, phone hang / screen freezes- average once in 3-4 days) and ultimately yesterday the capacitive touch buttons i.e. recent app button, home button, back button stopped working.
So, today, my wife took the phone to the MI service centre (Digitech services, 115 / B Cannel Street, Sreebhumi, Kolkata, West Bengal 700048, India). There was a huge crowd. During waiting for her turn, my wife could not stop noticing that the phone inspecting person was giving the verdict to almost every customer that the phone is liquid damaged and it will not be covered under warranty. It's repair cost will be almost as much as the price of buying a new phone and to no Surprise, he gave the same verdict for my wife's phone.
My wife took back the phone without repair. When she power on the phone and tried to communicate with me, to our ultimate surprise, the phone's ear piece was not working (which was working fine before submitting it to the service centre).
With my absolute grivance, I want to tell you that, I smell foul play here. How is it possible for almost every phone gets damaged by liquid?! The phones were not opened in front of customers. I don't know what they did to the phone inside the room. The doubt doubles when my wife gave them a phone which ear piece was working fine and received a phone which earpeace is defective, that too just in one hour and in the hand of your certified efficient(!!) engineer.
I am writing this letter to get justice. I know that my phone was not liquid damaged. (How can everybody's phone become liquid damaged!!!).
This is a nasty business. Instead of repairing a small issue, you are trying to compel the customers to buy your phone motherboards which is almost the price of a new phone. By doing this, you people are actually selling the mobile on double of it's MRP. Once when you are selling the mobile and again, when you are compelling the customers to buy the motherboard.
I am requesting you to stop this dangerous business. Till date MI products advertisement is largely dependent on MI loyal customer's (us) recommendation to the possible buyers. If you continue this dirty game you will lose us. I will definitely not recommend Xiaomi to my family, friend and relatives. In fact, I will discourage themto buy Xiaomi products (Is not that natural?) and they will spread the same words to others. The chain , the bonding that make you so big will start to collapse. This not the word of me alone. My wife spoke to several other customers. All of those dissatisfied customers told the same.

Xiaomi, there is still time. Change. Change your policy. Repair your loopholes. We like MI products. That is why we are so hurtened. Take necessary steps at the earliest.

Thanking you,
S.Roy
11.09.2017
(Still a loyal MI customer)