butcherization

Butcher
verb

slaughter or cut up or ruin

-ization (a suffix) the act or process of making

Butcherization :
the act of slaughtering or ruining something.

While waiting to be called in the ER by a doctor. I had not realized they had been calling my name for a while. They were mispronouncing it very badly.

It was the worst butcherization of my name I had ever heard.