Your post has been moved to a dedicated new thread, you'll have seen from the thread you added to that there were 46 replies in just over 2hours - that's a good sign of a national issue.
What's the issue you're having with making or receiving calls - can you explain a little more? Are all calls affected, or just particular ones? Does this just happen in one area or several? Are only calls to particular numbers affected, or all destinations?
