Got a call from this number. Must be new as I'm the first one to report it here. I reject all these calls with a number to call them again myself. When I called it straight away, it said "This mobile service you have called is currently unavailable. Please try again later." The reason I reject these calls now instead of letting it go to my voice mail and call them back myself, is because they get paid for the number of connected calls they make. That's why they hang up when you answer. All they want is for you to answer or let it go to your voicemail. Let's stop this. Reject all calls and call them back yourself.