So, if I don't recharge (a little bit) each month, I can't use my card even if it's active

Very strange!
I don't live in France, so you think I can buy a nrj sim?

[COLOR="Magenta"]"Working" PrePaids: Wind, Vodafone, CoopVoce, , Travelsim (2), 02 Irish (2)
My best sim?--> Wind +39-328
My phones:
Samsung Galaxy Next S5570