It looks as though I shall be leaving Plusnet mobile. Every day I'm inundated with premium rate number, usually silent calls, no doubt they hope I am stupid enough to call them back. I block each one but they keep coming back with new numbers. It's incredibly irritating and it can't be beyond the wit of man, or Plusnet Mobile, to allow me to block ALL incoming premium rate numbers. I'm now seeking a new provider that will allow me to do that.