Iwatch 7 Activation to Cellular

I have read many comments about customers having issues connecting their new iwatches ordered from Xfinity to their cellular plan. I too am jumping through the same hoops of multiple calls to customer service, apple and re syncing with no luck in resolving. @Xfinity has this been resolved!?! Please help me activate my iwatch to cellular!!!! If this cannot be resolved I want to send my watch back, and cancel my plan and go to another provider.