Caller: aussie asure

Have told them last time i actually got through to Aussie assure that they are not to ring and remove me from their list. the latest is two rings and hang up. Apparently i am required to email them to ask them to stop. They cannot be contacted by phone. I am sick of their persistence and the fact that Iam required to jump through THEIR hoops to remove my number off their list. Real helpful that they can ring but not be contacted themselves.