Disclaimer: No infringement intended; not profiting off this.
Sarah Jane Smith
Jack Harkness and Gwen Cooper were off information gathering when the Skype call came through. Jack probably should have shared with Rex and Esther that Torchwood, despite being officially defunct and not having much tech left, still had a fair amount of contacts at hand. But then again, they were almost all related to the Doctor and, as Gwen could attest, being cryptic about all things Doctor related was just something Jack did. So perhaps, in all fairness to Rex, there really was no way he could have known.
"Hello," said the voice of the middle aged Brunette woman on the other end of call. "Is Captain Jack Harkness about?"
Rex, unsure of who this woman was and how she was contacting him over the supposedly super-secure-beyond-the-CIA Torchwood network just kind of stared at her.
"Who the hell are you?" he managed, squinting at the woman
"Sarah Jane Smith," replied the woman evenly, "and I can ask the same of you."
Rex turned sidewise mouthed at Esther "Google who this chick is."
When Ester mouthed back "freelance journalist", Rex did the reasonable thing as this 'Sarah Jane' continued with "Are you Torchwood? I got an alert from Mister Smith that the Torchwood software was back online and I think some information sharing is of importance."
He shut the computer, hanging up on Ms. Smith.
He had no idea who "Mister Smith" was, nor did he care. He did care, however, that apparently Jack was even worse at undercover work than he thought; he was not only on first name basis with the press, but shared information with them. How on Earth Torchwood ever managed to be as secret as it was beyond him.
Rex, as the self-elected real leader of the operation, took the opportunity to tell Harkness what an idiot he was when he and Gwen got back to the hideout.
"Wait, the press contacted us. On the Torchwood Network?" asked Gwen incredulously.
"Yep, some freelance journalist, used your name and everything," said Rex, honestly more than a little smug he was so much better at this than "Captain" Jack Harkness.
"Wait," asked Jack "Her name wasn't Sarah Jane was it?"
"Yeah, that was her," confirmed Esther
Gwen bit her bottom lip, as she internally tried to decide if this new development was funny or just annoying.
Jack simply began to slam his head into the wall. And then he stopped when he realized that not being able to heal and all, it'd probably leave an ugly blue mark and he wouldn't appear nearly as charming and handsome; he'd actually have to put some effort into attracting every male in sight for his ongoing effort to drive Rex crazy. So instead he just snatched the laptop out Rex's hands and called Sarah Jane back.
Sarah Jane, to her credit, seemed fairly understanding as Jack apologized for his team hanging up on her. She calmly informed Jack that her former neighbors, the Jacksons, were based in DC and working on hacking some government documents pertaining to patient organization, and that Mister Smith and K9 were running planet wide scans on any particularly peculiar medical cases that arose and may provide some more clues on the exact nature of what they were dealing with. She didn't even go into her usual anti-gun rant or look particularly annoyed at Rex's exclamations of "is that a blue metal dog?", "wait, your team is a bunch of under-aged kids?", "you call your computer Mister Smith?", and "the blue metal dog fucking talks?"
No Sarah Jane, ever the professional, waited until the end of her report before adding "Oh, and Jack, get better companions".