got a $30 bill from telstra on my prepaid. They were calling me which I ignored as a scam and somehow I copped a bill for a 30 min call which i did not make. In the old days u would get a malware dialer on your pc and they would make calls to themselves at premium rates charged to you. Has it started again ? Saw a similar story in england. Telstra of course said i made the call tuff luck. Have never called anyone on prepaid at a dollar a min for more than 1 minute.