I turned off my my Comcast services at the end of august before leaving for Canada for a little over a month. Comcast rep told me I could hold onto my cable card for a couple of months before incurring charges incase I want to rejoin when I get back so I wouldn't have To go through the hassle of returning and reordering a new card. Well, I get back and all my hd channels are still working with cable card with the exception of xfinity on-demand which was working when I was paying for service. I'm not now. (I'm in sf bay area btw). Anyone know how long I'll continue to get free service or when or what comcast will charge me for not returning cable card?