Nokia India — very poor service provided by nokia

Address:

Lucknow, Uttar Pradesh, 226016

Dear sir/madam,

I have purchased nokia 6.1 mobile imei no[protected] and [protected] on the date 09/05/2018. And my mobile is facing too much issues and also i have visited so many times to nokia mobile service centre address-1st floor, vaibhav complex, faizabad rd, maruti puram, rabindra palli colony, lucknow, uttar pradesh 226016.
Issue :- 1. Calling volume is very low.
2. Usb port not working.
For calling volume issue i have visited two times and it works good 02 to 03 weeks and after that i am getting same problem.

Please do the needful.