Xiaomi India — Redmi 3s Prime Mobile Phone accessories issue

Address:

Howrah, West Bengal, 711204

I Have purchased an new Redmi 3s prime mobile phone from Flipkart before few days but, After 15 days of purchase the charger of the phone stopped working.
I have visited the authorised service center of MI many times where i could not get chance to register my comlain due to unlimited amount of pending complains and so many people were in row before me at the end after 10 days i got the chance to register the complain the officials told me to replace the charger within 15 days and for this they told me submit the existing charger
Please explain how i will manage to charge my cell phone in these 15 days after submitting the charger
I should get a new charger from the company at the earliest, since the product is newly launched and i have purchased it in the second slought only.
Please look into the matter, and arrange to provide a new charger at the earliest