Sorry to say, but there are too many Zong employees on this thread.
Zong has mother of third class services, very slow internet (happens occasionally), and they keep wrongly deducting balance and show much higher than actual data usage. Balance deductions mostly affect those users that do not subscribe to internet bundles or have non PTA approved mobile. They fraudulently charge Rs. 4/- each time multiple times a day for mobile data usage on daily basis, even if the consumer has not even installed mobile data settings.
Zong is total rip off and sadly Zong employees here keep talking about Zong. Infact, Zong is the only thing discussed here!.