Nothing exclusive service centre in Bangalore is located at Indiranagar. You can search it on the web. Take your phone, bill and box for warranty claim.
Narasareddy Change the tempered glass to branded ones like Gadgetshieldz, Nothing Official Screen protector or Spigen. This will mostly solve the touch sensitivity issue. I opted for Gadgetshieldz (pack of 2) and problem resolved successfully. Got my phone Display tested by nothing exclusive service centre in Bangalore.