I am planning to write a story about people working with this organization are shrunken and sent to make 'first' contact with a civilization of cockroaches. Things go sideways at 200 MPH though as it turns out the roaches were not the most friendliest bunch.
I had planned originally that the most of the 1st group of people(there unofficially) got killed off before they could call for help or were too shocked to do so and the lone survivor's phone died before he could call, kinda the same for the 2nd group, but I think a few just did not bring them as well.
This does not account for radios, assuming they had them.
I feel this could seem too contrived, so I thought I would ask for advice on what to do; should I just go with it or find better reasoning?