[Resolved]  Vodafone Data Card — wrong billing

i god vodafone data card which gives 500mb/month for rs 500
and they also gave a software to track how much i use every month.
i used around 470mb in the month but the bill came to be around rs 8000
and they said i used around 1.8gb of data.i made a complaint and asked for detailed
billing, it took 2 months and lot of effort on my part to get the detailed bill, mean time they closed my
internet connection for not paying rs 8000 and they locked my other mobile number 3 days after i got the
detailed bill.the surpridse was the detailed bill showed that i ysed 100mb in 1 hour in a data card which is not even possible.by this time the collection guy called me, then i went to collectionwith screen shot of
the usage i have in comp and the detailed bill and explained it is not possible to download 100mb inone hr in a datacard...but no use my other line was cut and as i was expecting a interview i had to pay tha amount to get my mobile working.the coustomer service is really bad and i would be happy if some one can help me on this.