Vodafone India — vodafone is a big fraud company

Vodafone convert my reliance prepaid number to Vodafone postpaid telling that after three months this will convert in prepaid.but after three months they tell that it will take some more time to convert.during this period I have paid thousand rupees as bill amount.after some months a get a call from Delhi the person tell that Vodafone has file a case against me for their due bill amount.i immediately go to Vodafone store and paid my all due bill amount.after some days I again get call from Delhi they tell that the bill amount you paid is not updated till now..what is this?? Vodafone is a big big fraud company never get it's network.they earn money by cheating customers hard earned money.