Inappropriately casting my own stylistic sense onto your story, I'm thinking that an extended description of you interaction with the help line would be the beginning set up.

After arduous sawing, a tug on the rope makes an unexpected spring of the limb, thus taking out your wired connection.

The ending now becomes another call to the help line where now, they don't believe your connection is gone.

And yes, I have experience with such things.