In "The Bells of St. John", Clara calls what she thinks is a help line for her computer. When the Doctor answers, Clara says that the woman at the shop told her it was the best help line in the universe.
Maybe I missed something in the episode, but who is the woman at the shop and how did she get the number for the TARDIS? I've got a few ideas:
It was a fortunate coincidence. The woman at the shop gave Clara the wrong number and it just happened to be the TARDIS
It was Sally Sparrow. (Maybe she upgraded to computer repair plus video rental?) But then how did she get that number, and how did she know Clara needed it?
It was one of the Doctor's previous companions who has gotten out of the Universe Saving business and into something more mundane. But then, how did this companion know that Clara needed the Doctor?
Like I said, maybe I've missed something. Either way, I'd like to know.
EDIT: I am mostly interested to know
- Is there an official canon answer to this question?
- If not, is there anything from the other episodes in the season that I've missed that might point toward an answer?
- Lacking both of those, is there anything that has been said by Moffat & Co. at conventions or in interviews that might hint toward an answer?