Indesit Fridge Freezer RAA 24N – Freezer too cold, Fridge too warm.

Hi,
I have a Indesit Fridge Freezer model RAA 24N.

The freezer is too cold, not sure of the temperature, but ice creams come out rock solid.
Meanwhile the fridge is too warm at about 10 degrees C, regardless of the setting on the dial.

How does the freezer section maintain it’s temperature on this model ?
Is this a simple case of having to change the thermostat in the fridge section ?

Thanks in advance for any help or advice.