How do you get placed in venues in an oversaturated market with a niche vending machine?

Hi, I'm in North NJ trying to place a robotic cotton candy vending machine and it seems every place that could possibly have one has one. I've approached play centers/malls/theaters and essentially every place I could think of with no results.

I'm doing something incorrect here but I'm not sure what. I call them up, ask if they are interested in placing a vending machine and they instantly say no without me even launching into my pitch. I'm not sure what I could be doing better.

Does anyone have any idea of what I could be doing?