T-Mobile USA

My recent bill from T-Mobile had a charge for $312.43 (157 minutes) that was for an international phone call that I never talked on. I also checked with the person in Sweden and all he showed was a missed call. In trying to get some resolution with the T-Mobile customer service all I could get for an answer is that the connection was made so it has to be valid and the charges are legitimate.
During the time period that the phone call was supposedly connected the person in Sweden shows an SMS text to me. In trying to get T-Mobile to show proof that a connection was made their response was our records show this so it must be right. All I can state is that T-Mobile really lacks in customer relations. I even had a Supervisor hang up on me. This is one case where i wish the government had some regulation so we could quit getting ripped off by the mobile phone companies.