Ignoring an OSS option is not the crux of the issue, it only adds more stupid to the cake. They don't deserve a place on the OSS hall of shame, but on the list of shysters and fraudsters.
A company is exploiting your free-trial offer, defrauding your project of resources even if it is only a buck and a half. Why are you sending them money? Just shut them down. Unless you have some really unfortunate wording in your TOS, there is nothing they can do. On Monday, send an e-mail to all accounts associated with $COMPANY and tell them in clear terms that you are going to terminate their free-trials COB EOW. Leave a special contact number to negotiate fees, wait for your phone to ring.
A company is exploiting your free-trial offer, defrauding your project of resources even if it is only a buck and a half. Why are you sending them money? Just shut them down. Unless you have some really unfortunate wording in your TOS, there is nothing they can do. On Monday, send an e-mail to all accounts associated with $COMPANY and tell them in clear terms that you are going to terminate their free-trials COB EOW. Leave a special contact number to negotiate fees, wait for your phone to ring.
Seriously, why are you putting up with this?