Comment by pc86
I haven't heard about this in particular but based entirely on your depiction here it sounds more like fraud to me.
If I was paying a flat rate for a no limit plan, that company tried to sell me an Enterprise plan which I declined, then they cut me off, we'd be in court as soon as the clerk would schedule it.
If you were rotating IPs against the TOS I don't think you'd have a leg to stand on