Why is your support so bad? And your website---very poorly designed/non-intuitive

I have a primary residence in PA with an Xfinity Wi-Fi gateway.  For my shore home in NJ, I ordered a second Wi-Fi gateway from an Xfinity store in Rio Grande, NJ---the customer service rep I met with added this to my existing Xfinity account.  Upon setting up the second Wi-Fi gateway (with Xfinity support), I found out that this caused my primary Wi-Fi gateway to be disabled.  So, I worked with Xfinity support to re-enable my Wi-Fi gateway at my primary residence.  When I visited my shore home, I found that the Xfinity Wi-Fi gateway there had been disabled.  I, once again, worked with multiple Xfinity support people to rectify the situation and was finally told that you can't have two gateways tied to the same account---even though the Wi-Fi gateways are at different residences (both owned by me).  Why wouldn't the customer service person who took my order in the Xfinity Rio Grande store not have told me this??????????????  

Xfinity support told me that they would fix the issue by creating a separate account---this would allow both Wi-Fi gateways to work without interruption.  This worked until this morning when I got up and realized that the Xfinity Wi-Fi gateway at my primary residence was once again disabled.  Back to Xfinity support to get it up and running, which it is now---but I can guarantee that my shore home Wi-Fi gateway is now disabled.  

It is time to switch to T-Mobile...I hear their support is much, much better...