Escaped Felon

Didn't know we had an escaped felon in the family, but today the O'Fallon Police Department tracked down Mary at home and Officer Unfriendly phoned to say she had driven off from a gas pump without paying.  She insists she paid with a credit card and even has a witness to back her up, but they said to tell that to the judge--I mean, the Fast Lane clerk.  Which she did (after checking her credit card account) and it seems this happens now and then.  The pump accepts the card and lets Fast Lane know you're taking their gas but then it doesn't send the info to Visa or MC.  The tipoff is, it doesn't print your receipt either.  The police traced Mary through her license plate number on surveillance video.  Good work, CSI O'Fallon!