Jon needed to pay his cable bill.
Did he forget?
He was supposed to have done it by now.  The cable bill is a serious matter.
Maybe it slipped his mind, but he can still pay it. Relax, it really isn't too serious a matter.
How many times I need to tell him, cable bill is a serious matter.
I agree with you that paying bills on time is a serious matter, this is just the cable company that you are dealing with.  The worst thing that can happen is that they cut off service, and that would only happen after many warnings.  If you need Jon to be more responsible, try setting up regular reminders for him.