XM Sirius Radio Auto Renew Policy

I have been a Sirius radio listener since its inception but I must say your auto renew policy is the worst policy I have ever had to deal with. I own my own software company and lease cars with Sirius radios. Each time it comes time to renew for another year I have the same argument with your staff with regards to the billing. They continued billing me and sent me to collections for something I in no way was responsible for even though I had cancelled by subscription. I fought that and won. Why does it take a customer getting angry and jumping through hoops of fire and rings of steel for you people to provide customer service? This is the most absurd thing I have ever dealt with with regards to payment for services.