Jazz subscribers are of two kinds; either prepaid or postpaid. There’s a slight difference between the two. Being a prepaid customer, you’d have to recharge as soon as you run out of credit to enjoy multiple network services. The chances of finding possible retail stores at every time and place are very few. 

Being a postpaid customer your bill is due by the end of the month. The whole month you can enjoy Jazz mobile services as much and as many as you want, given the fact that you pay at the end of the month.