I have been problems with my service also.It has been more than 12 HOURS SINCE I CANNOT USE my phone, for a service that I have already paid for.
The phone says" not registered in network" and my online account "your plan was expired". I tried to contact them over the chat website, the waiting list was "only" 71 other people waiting in front of me. And by the time it was almost my turn, I got disconnected. And since I had no phone to use, I had to borrow somebody else's phone so I can call them.
I am not exaggerating when I tell you it took almost 1HOUR to wait to talk to somebody.
That means that my coworker couldn't use her personal phone also cuz I has waiting for an hour to talk to them!And 12 hours later the problem is still NO FIXED!!!