Comcast sent a letter of promotion to switch to high definition in Feb 2010 and i called for the promotion. Then they scheduled appointment for installation. they showed up with a wrong digital device. I called back the next day and they promised to send another technician with the proper device. But no one ever showed up. Then they increased my bills few days after that to $120 while the promotion was just $69. I called several times and could not get anywhere but since then my bill was increased for about $10 every month. I have been their... read full review »