Why does the TV box keep going offline?

My TV box  goes offline DAILY.  Why?  Is there someting wrong with the cloud?  It is VERY frustrating not being able to change channels.  "Cannot Connect to Internet" is the notification on the screen.  Is there a way to get boxes not dependent on the cloud?  To hardwire them directly into the TV?  I am VERRRRRY frustrated with the service I am receiving and being able to talk to a PERSON about it.