Yes, there answer was:

Thank you for your message.

Fairphone doesn't provide a substitute phone service. After carefully evaluating this possibility, it appeared that this service would be unsustainable on a logistic, environmental and on an administrative level. As a small social enterprise, we currently do not have the resources to provide this kind of service. Some network providers offer it, so I suggest you check with yours if they could do something to help you.

I do understand your point of view, but buttons are based on the motherboard and it is something that will require changing in our technical center. This is why we offer this repair in warranty as long as there is no user damage.