Xiaomi India — about service at authorised service center

Address:

ASC code : XMIN2314 , ASC Contact:8888396879 ASC Address: SGN Enterprises,Bhagirathi 47/3/, Plot no 2,1st floor, Taware Colony, Surbhi mangal Karyalay Lane,Behind Sambar Hotel , Satara Road,Pune ,Maharastra 411009.

I had purchased redmi 8 on 12/10/2019 from flipkart as the phone was only available online during that period. Now the phone does not charge beyond 27 % so i went to asc but they lied saying that your charger and charger cable is faulty. The same cable and charger works for other redmi 8 phone.
My phone is in warranty and i want it repaired otherwise i am going to file a complaint at consumer forum against this asc as well as xiaomi india.
Already sentiment is not good about chinese companies. Please do the needful as soon as possible before i take some legal action at consumer forum.
Asc code : xmin2314, asc contact:[protected]
Asc address: sgn enterprises, bhagirathi 47/3/, plot no 2, 1st floor, taware colony, surbhi mangal karyalay lane, behind sambar hotel, satara road, pune, maharastra 411009.