Originally posted here by cwk9
unprofessional yes, illegal no.

Las I heard port scanning was legal in the U.S.
http://www.securityfocus.com/news/126
I would imagine you would end up with a similar result if you tried to charge/sue some one for port scanning in Canada.

You might be able to get results by voicing your concerns to their up stream provider.
I thought that might be the case cwk9, I am going to let the lawyers run with it anyways to see if they can dig up anything. I am also checking with their up stream provider to see if they have a TOS in place that these guys may have violated.

Cheers: