A story repeated on many UK ISP forums - Tiscali are getting a very bad reputation.
1. You signed up for unlimited - and that is precisely what they sold it as
2. They changed your conditions, without telling you
3. Instead of requesting that you moderate your usage, they kick you
4. Don't expect an easy migration - they won't give you whatever that migration code is called
Basically, Tiscali are dumping the users they don't want, in a sneaky and underhand manner.
There are some "big" broadbands, with chunky limits - can't remember, but one was 500Gb, while another "unlimited" had a target average of 10Gb, and 100Gb as an abuse threshold.
"Unlimited" can last only as long as the over-use by a few is balanced by the under-use of most - otherwise there have to be measures like a capped limit, capped slowdown, or "forced contention", where all the bad boys share one link of limited capacity.
¡uʍop ǝpısdn ɹoʇıuoɯ ʎɯ pǝuɹnʇ oɥʍ ¡ʎǝɥ