Lenovo — repairing of mobile is very bad.

Hello,
I am rekha agrawal from bhopal, i have lenovo k4 note buy on 22 january 2017 online from amazon.in this not even completed a year. My mobile was dropped into water so i gave it to the service center. They repair it for first time but it is not working, it was getting hang and bluetooth, wifi network, sim network, volume button not working properly, the volume is slow now, the brightness is also affected and many problems, the screen get blur again and again in 1 or 2 seconds. Whenever i switch off it and when i on it this message is always there - (Process system is not working - wait or ok) but if i go for any option it again get hang for 5 to 10 minutes. I am not getting that how they have repaired it. Then again i want to the service center they were saying it will be ok after getting it update so i gave it to them now it is not even getting start from 5 days the service center peoples are not listened to me on the second time when i went there.in starting also they have not checked it properly only said that their is a problem in mother board and get it repair so i get it repaired then also it is not working. I am sending you the videos of my phone and the bill of the service center of 1st time so that you can easily get the problem. So can you help me in solving my problem.
Rekha agrawal
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