How can I escalate a internet speed issue with my Gigabit service?

[fredcdw]

Hello:

I'm trying to resolve an issue with my new Comcast gigabit service. I am not getting the QOS speeds advertised by Comcast. I've had 3 different techs com out and tell me it's my problem. The issue is is I'm only getting 250Mbps download speed at most. The tech did a line check and claim that it's on my end even though it was measured with only the cable modem (An Arris SB8200) connected to my wired NIC on a Dell M4600 wired connection. The last tech I talked to said that I need to buy a brand new $3000.00 computer in order to get those speeds. Needless to say I'm frustrated beyond words. So I want to know who else I can speak to at Xfinity beyond the tech level. To me, this is false advertising on Xfinity's/Comcast's part. I'd really like to exhaust all avenues before I give up and downgrade the service back to Blast level. Thanks for any advice.

[EG]

Have you seen this ?;

https://forums.xfinity.com/t5/Your-Home-Network/Gigabit-speed-troubleshooting-video/m-p/3310454#M316...

[fredcdw]

Thanks, I have tried most of those suggestions and none has helped. Local Comcast technical support has all but written me off on this issue. I need to speak to someone on the national level to get this resolved. Any ideas?

[Again]

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@fredcdw wrote:

Thanks, I have tried most of those suggestions and none has helped. Local Comcast technical support has all but written me off on this issue. I need to speak to someone on the national level to get this resolved. Any ideas?

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That computer is how old now? 8? 9? years old?

[haleymateo]

1 888 824 8988 Comcast 3rd level support

[fredcdw]

It's about 7 years old, but it does have a built in wired NIC that is gigabit. And I have tested it with only the modem connected to it. Best I could get was 280Mbps down and 40Mbps up