Nissan NV200 issues

[Carnmore]

If anyone has/has had a Nissan NV200 (1.5dci Acenta) :

The bluetooth phone microphone is poor - the other caller can't hear me.
Is is faulty or just a poor system?

The engine continues to rev between gear changes - 1st to 2nd to 3rd noticeably.
Main dealer says this is normal - is it?

There's an air escape or intake noise from the engine.
Again, the main dealer says this is normal?

Thanks in advance.