Couldn’t hurt to start forwarding them a copy of every spam message received .. just so as they know of the problem 
Might print a copy and fax it too… to make sure that it get’s into the right hands…
Mailing Address:
Kahnawake Gaming Commission
P.O. Box 1799
Old Malone Highway
Kahnawake Mohawk Territory, QC J0L 1B0
CANADA
Fax Number: (450)635-1139
Email: [email protected]
Handy lil complaint forum here too, might want to file a complaint for each instance, just to help them better document each occurrence of spam…