Mi Mobile - Phone not repaired, Submited service center on 03-07-2017

I don't write amount of loss because its calculated by company.
My name is Alok Sharma from Jaipur, Rajasthan.
My mobile phone Redmi note *-*gb-**gb had charging issue on ** July. I submitted my phone at service centre on * July **:** am. After that till today my phone not repaired by company I wrote mail but they didn't take any action. I called so many times, more than ** times on customer care toll free no. Of MI India but they don't give any satisfactory answer. I just fed up from all the things. It is the worst service that I ever faced by any company in my life. So many of my works are pending from this behaviour of company. I called service centre they said that part is not available here so they are helpless. I don't know what wrong with company. I just irritated these things and just fed up. Please help somekind of me. I attach the service order.