I have been using TPG sim to call my family in Japan for years. But from about 6 months ago, I have been having problems with connection. It often connected me to other countries. Also recently, no longer I can not call my mum's landline. As soon as I make a call, it connects to somewhere and automatically answers my call it is not my mothers phone and there is no voice. I tried other Japanese number of a mobile phone. It was fine. I thought that mum's home phone had a problem. But I tested to call her with my husband's mobile phone (Vodafone), and his phone can reach her. So her landline is fine. I wonder why suddenly I became not to be able to call her with my phone. ... View more