The stranger accidentally phoned her number while she was having a stroke but luckily, 75-year-old Bicky managed to get the lady's name and address.
Bicky, from Morpeth, Northumberland, made sure the poorly woman was calm before calling the police for assistance.
The unnamed lady was taken to hospital where she has since recovered from her stroke.
Bicky said: "The lady was confused and her speech was slurred. I was worried for her."