mishandled

/M IH0 S HH AE1 N D AH0 L D/
verb
  1. 1

    To manipulate something roughly, causing physical damage.

    โ€œIf you mishandle a fragile package, the contents may break.โ€

  2. 2

    To deal with a situation incorrectly or ineffectively; to make a mistake in handling a situation.

    โ€œThe prime minister was accused of mishandling the diplomatic crisis.โ€

Source: https://en.wiktionary.org/wiki/mishandle, https://en.wiktionary.org/wiki/mishandled