Upgrading my Worldcall Broadband Package

#1
I currently am using the 512kbps Worldcall broadband connection and I would like to upgrade the 1mbps connection for a faster connection, but I do not know what the procedure is for upgrading the package. Would I have to call up Worldcall broadband customer care or is it something which I can do online myself?
 

#2
It would be a good idea to call up WorldCall broadband and getting the upgrade done by them, this way you can make sure that the upgrade has been done. WorldCall also have their online portal, you can register on the portal and see if there is an option to upgrade your package from there.