Asus India — Given the mobile for repairing about the battery issue

Address: Dot net computers and services gandhi square 218 1st floor mcc building opp indian bank devaraja mohalla mandi mohalla mysuru karnataka 570001

I have given the mobile for the battery issue since 1.5 month and they told that they will give in one week.after that if we try to call them they were not reponding properly sometime the number will be switched off.if we go to the service center they will send us like saying that they will give it tommorow and we if we go there either the shop will be closed or they send us like that only.
we have given the mobile on 31-aug-2020
and we have paid 4150 and in that we have given 1750 in cash mode and 2600 using g-pay
kindlyresolve the issue