The price that your being charged is $ 4.95 per month, for virtual hosting, is it not ?
I can't see it being Webair problem if your going over your limit !
If for some reason you can't afford $ 4.95 per month you should be running away from the business...
The only way to have your own site up for next to nothing is to host your website(s) yourself...
If you have a Dynamic DSL connection, I would suggest setting up a personal web server and having your domain(s) hooked up to
http://freedns.afraid.org/ and running a dynamic DSL keep alive script updating your IP address for
http://freedns.afraid.org/...
Or save yourself the time and just upgrade...
Later,
.