WorldCall Broadband Reviews

I'm using a Link Dot Net connection but I now wish to get a higher speed connection but its too expensive, so I am thinking of getting a WorldCall broadband connection, they are currently offering a 4mb connection for Rs2000 per month with unlimited download. Now what I would like to know is that what is the download speed like, as the main usage of the broadband connection is downloading, and if its not good enough then its no point getting the connection.