Sirius Radio They took $306 out of my checking account without any authorization, two weeks before Christmas

I bought a new car last year and it came with 6 months of Sirius radio.  When the 6 months were up I renewed for one year at a special rate.  On December 8th my contract was over and I was waiting for them to contact me to renew.  They did not contact me.  Rather, they withdrew $306 out of my checking account.  It took several hours on the phone with a representative that did not speak very good English.  She did not know why they took that much money out of my account.  The cost for one year is $99, not $306.  Two days later they refunded my money.  If I did not check my account every day this could have slid by.  They never had any authorization to renew or take my money outside of my initial year. 

Be careful - if you renew your service tell them you do not authorize them to auto renew (and watch out when your renew date comes).