Thanks for posting on our community forums. Disappointing to hear that you're having interrupted viewing services of an early evening on a regular basis.
We can understand the annoyance this will cause especially when watching a movie. As you have stated this is happening 3-4 times a week, we will need to do some further checks for you.
When the reboot happens, do you have any error messages appear, or does the box just reboot and show the starting up sign?
Have you noticed that your light on the front of your box has changed to a different colour?
As this is happening on a regular basis it might be the hard drive in the box that has an issue.
Please can you let me know of the above, and we will investigate this further for you.
Kind regards Jodi.