ARRIS Cable Modem & Router Comcast Xfinity Only

I received this modem to replace a much older one. I hooked it all up and attempted to contact comcast to hook it in to their system. Here is where things got frustating. I called the number in the documentation and after getting bounced around from automated support area to automated support area I was told to power off for 10 seconds and power it back up and then recontact Comcast. Which I did. As I was waiting I opened a browser and there was a page for comcast to get their mobile app for my cell phone. So I installed the app. Long story shortened after 15 minutes of going through the app they connected me with customer support. Mind you all of this is being done in text on the phone. I hate texting at the best of time. SHould only be used if your partner needs you to pick up milk on your way home from work 30 minutes later they said it would take 30-45 minutes for the system to recognize the modem and I should expect a call in an hour from comcast. This was 2:35pm. Well, 75 minutes later things were finally working. By 9pm I still hadn't received any phone call. I do not fault Arris for this. There product appears to work well. Much stronger wi-fi signal in the house so no complaints there.In conclusion A+ for the Arris modem. D-/F for Comcast/Xfinity tech support. Money value also A+. I won't and can't fault the product for Comcast's bad tech support.