Fastcom (you) cannot actually provide those speeds can you!? i have had fastcom for a year cos i can't get anyone else. Myself and many others are all having speed problems, that of standered dial up speeds.
You send your guys out to repair the prob, they do the work and still slow!
Basically you need to stop advertising something you can't provide, or upgrade your tech. Up to you i guess but there must be some law against it.
Garfy