After the trial period for XM Radio in a new car expired I opted to pre-pay for one year of service. That service ended in Oct. 2008. In December I received an invoice for service post-dating that period. I called to let them know that I had not renewed my service and to have the bill canceled (the radio had already stopped receiving XM service). The three individuals I spoke with, including a "manager" stated that XM service automatically renewed. When I had originally signed up for the one year service plan over the phone I was not... read full review »