Suggestion: Why do not u look for another server?
First of all, sorry about my english, i'm not an english speaker.
Well, i have thought that why u don't look for another server, with unlimited bandwith a better options?
The problem here it's seem de bandwith, no and you must pay mensually, (i think so).
One solution is hire another server. I use one, aruba.it
It offers unlimited bandwith and space, mysql, linux server or windows server, , access via ftp, etc etc etc.
The best of that server is that de paymen is annually, i have my site with 500 mg for DB, and a few more things and i only pey 80 € annually (1 € = 1.5 $).
Maybe u need more DB, or space, or whatever, but i think that it is cheaper to pay 500$ annually, than mensually.
If u don't like this hosting aruba.it, look for another one that offers what u want and it's cheaper than this server.
Sorry for my bad speeling