Cut off without warning

Since several years, I use to pay a full year in advance. Once more, they cut off the signal, without ever giving a warning. And, this happened while I was abroad.<br> Have phoned 3x, send emails 3x.<br> Last Contact with a supervisor from the help centre, response: I am supposed to know when my subscription ends...<br> What an absolute lack of service.<br> And the agent in Somerset West is closed.