I have solutions, if you are using Xfinity you can use the following steps: If you are using an older Box let me know the model number and I will see what I can dig up. However remember you are paying them for your service and they always have tech support awaiting your call.
Setting PINs in Parental Controls
Press the xfinity button on your remote control.
Using the right arrow button, scroll over to highlight Settings.
Use the down arrow button to highlight Parental Controls.
Use the down arrow button to highlight Parental Control PIN.
Enter a four-digit Locks PIN of your choosing.
In the Parental Controls window, tap Edit within Lock specific channels.
In the Lock channels window: Tap each network that you want to lock. Tap Unlock All to unlock all channels.
When you’re finished, tap the Save button.