Comcast says I can't get gigabit Internet using my Netgear CM1150V modem

I have a cm1150V modem and just called and upgraded to 1gbit today.

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@jmoskal wrote:

I tried to upgrade my Internet service today, but was told by Comcast that my modem (Netgear CM1150V) is not supported by the gigabit package.  I bought the modem last year specifically because it was supported by Comcast with higher speeds.  Has anyone else been told the same thing? This makes no sense to me.

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It's supported. Call again, get a different rep;

https://www.xfinity.com/support/devices#details