On another wine making forum there was someone who was in the same situation as thirrsty. They lived in Saudi Arabia where alcohol is illegal, and wanted to know if bread yeast could make wine.
Bread yeast can be used, but as others have pointed out, it won't taste as good as regular wine yeast. When I started making wine, I used bread yeast because I didn't know any better, and while it made a drinkable wine it just didn't taste that great. It had an off flavor.
I would say if at all possible, order a few packets of wine yeast and make some starters, then keep these starters in the fridge. I don't know how long they'd last that way, but if it is incredibly hard to get wine yeast where you are, then maybe keeping some starters would help. It might also be a good idea to get hold of some yeast nutrient to keep the cultures going.
Or on the other hand, when racking from primary to secondary, keep all the lees and put that in the fridge. Then when you want to make a new batch of wine, just add some of the lees to the juice. I'm sure there would be some live yeast left in that which could take off.
This obviously isn't the best case scenario, but it might work in places where wine yeast is scarce.