GJ3168

I have had my 52 plate C5 HDI 110 for 4 months and the 12v power socket in the front of the car has no power, I have checked all the usual fuses etc and removed the socket to check that it was connected, has anyone got any other suggestions as to what the problem maybe. I am driving to South of France at the end of the month and want to connect DVD player for the kids, the jack on the DVD doesnt fit in cigar lighter so I cant use this instead. On the whole the car has been A1 this is the only fault, does anyone also have any info on servicing in France. THXS