TV & cable wall outlet

I am the person who applied for xfinity internet + tv. In our house.
there is only one cable wall outlet on the wall where the coax cable is plugged in. 
That terminal was connected to the modem when I installed the Internet. 
As a result, there is no cable wall outlet to connect to the TV box. 
TV doesn't come out and the remote control and TV don't connect. 
How do I solve it?