Got a problem with a neighbour, or with a utility bill ,your car, insurance, bank or any other company .... help is at hand through UFC Que Choisir and they will help you sue the person or company concerned.
They offer a marvellous service and it only costs 25 euros a year - brilliant value.
You can find local offices for this association throughout France. Find your local UFC Que Choisir office
The only down side is that they don't offer the service in English at the moment, so you will need to take someone along who speaks some French.
You can copy and paste the form to sign up.