Any mechanics near me? Chauvigny 86

Hello I have a mark 6 transit swb with turbo trouble. Am looking for a mechanic nearby who might be able to diagnose and fix professionally. Have had trouble trusting french garages as they dont diagnose or communicate problems and specifically dont say when the work will be done. there seems no such thing as an appointment
One had my van for 8 weeks claiming he was waiting for a part.

Happy to pay proper rates or swap stuff/work as long as the van is fixed within reasonable time. Tel 0605339963