My coffee keeps turning on whenever it wants, any suggestions to turn it off?

It is the Black & Decker “Brew’N Go”

There is no real on and off switch, just the “push down” to brew knob/slider. I’ve owned this brand new since fathers day. Any suggestions? So far I’ve, pulled the plug out and even have tried to move the slider up, although it doesn’t move upwards.

Thanks anyhow!