Good car but Touch screen audio system not working from day 1

Comfortable sitting position and the drive is very smooth. I drove that car for 250kms so far and noticed problem with the audio system. Good car but Touch screen audio system not working from day 1. I took the car to service center and asked for replacement. The service center technician observed that when the car is moving the volume goes to as low as 4 and comes back to normal by itself randomly. But this is not happening when the car is not moving. They yet to change the system. The awful thing is that technicians also doesn’t have proper knowledge. First they thought it might be some settings. But there is nothing to do with settings.  They tried factory reset but still it did not work.

I'll update as soon as they confirm anything about the solution. It is very surprising that it has a fault right from the factory. And its been delivered to the customer.

Comfortable sitting position and the drive is very smooth.Good car but Touch screen audio system not working from day 1.