Xiaomi India — same problem persist after repairing

Address:

Pune, Maharashtra, 411045

I have given my redmi note 4 under warranty at above mention authorized service center on date 16th sep to fix gps and charging related issue, i have visited the store after a week to collect my device, they told me issues are fixed when i have checked, i found that gps related issue is still exist, then they try many solutions but issue didn't get fixed by them. I was there at service centre for almost 5 hrs as they told me to wait, but no luck. Today 27th sep i didn't get any update from them.

I need to call them 3 to 4 time in a day to get update status, in 12 days not even a single time they called me to give update about the device.

They told me that we have tried all possible solution we are not able to fix this, even they asked me to collect faulty device as they cant provide fix.

My device is under warranty, i have ask them to proceed for replacement but no response.

It is my humble request to look in to this and help me to get out of this.