Flex is included at no additional cost for Xfinity Internet customers. I've double-checked your account and can assure you that you're not being charged for Flex. That said, of course we want it working smoothly so you can have an enjoyable viewing experience, and I'm sorry to hear that you're frustrated. Let me try to help. You mentioned that Flex is 'acting up.' Can you share details on what's not working (e.g., is it certain programs, specific apps, the Flex equipment)? Any symptoms you can offer will help us investigate. Thank you!