Who Called?
The paramedics? I mean, the gas station attendant was one of them, and the payphone wasn't functional, so who called the paramedics?
shareIt's possible that the phone was intact and was not ripped apart till after they (the girl and her mother) made a phone call.
When the escaped paramedic and the girl got to the gas station he was looking on the work table and saw the phone receiver and cord.