Xiaomi India — help centre issue

Address:

Vadodara, Gujarat, 390017

I'v redmi note 4 which got charging issue. On reaching mi help centre on 2/7/17 they said your mobile has it charging port issue need to be replaced. But it' waswas out of stock. They said try again later. I visited 6 times but port was not in stock. I tried to contact mi customer care. They told me to submit the phone at local help center and create a job sheet. While reaching local help centre they told me that charging port is out of stock and wil be back in stock after 15 days. Til then we can't take your phone in our custody. After constant complaining through email and phone they checked my phone again on 31/7/17 and found that my mobile charging port is okay but my mobile charger is not working proper. Charger need to be replaced. My charger was out of warranty on 23/7/17. They were not able to identify the problem intialy. Now they are saying to pay for the charger as it's our or warranty. It they could have checked my phone properly i would have save my time and could have my charger replaced. Can you help me out with this issue?