[Resolved]  Idea Net Setter — Shown error 619

3Gidea netsetter — not working properly

last month a phone call came to me to buy an idea 3Postpaid net setter in discount amount.They convinced me very much and I was agreed to purchase .The same day they delivered it in my house.The person was from Jain communication thane(west)The problem now is neither it is working properly in 3G or in 2G.At that time I was told that after using one month I can convert it into prepaid but now they are denying to do it.Now they are not responding at all.After calling several times they are telling to go any Idea gallery and ask them to change it into prepaid but gallery people are telling it is not possible before 4 months.Now my problem is actually i wanted it in prepaid that's why i purchased but now what I have to do?Now i want either they should change it into prepaid or i should be given my money back.otherwise I am not going to pay any bill amount.plz consider it and do the best .

I should be solved.

the problem should be solved as soon as possible.