Not 100% sure what you're saying here..... I assume you're saying you have a 2GB daily download cap?
If so, your options are really only:
1. Temporarily relocate somewhere with a better internet plan, download there & then return your setup to your current location.
2. Spent 18+ days (assuming you cannot allow for 100% of your daily cap to run the download) downloading the file(s) in stages.