Judith and Lorin's Phone Calls

In november 19 80, judith looks over her phone bills and notices that she'd been builled for three calls placed in santa monica, california on october first. According to medium, calls could be charged to your own number by calling the phone company and entering a pin code. So judith know she didn't make these calls, so did someonee wondering, did some one make them from her apartment? But that's not what happened. They theorize that she willingly went outside through the back door and planned to return into the apartment, but was met with foul play outside instead.