I sent the following letter to XM Radio, requesting removal of a charge they applied that I did not authorize. Not only did I send it to the email address XM says to send to on their website ([email protected]), but I looked up who the senior management was at XM/Sirius (CEO, COO, Sales/Mktg SVP, etc.) and found that the logic XM/Sirius uses in their email system is first letter of first name followed by entire last name and sent the letter to both @xmradio.com and @siriusradio.com for each name. The @xmradio.com emails were returned... read full review »