verb

interrupt (an event, activity, or process) by causing a disturbance or problem.

flooding disrupted rail services

throw into confusion,throw into disorder,throw into disarray,cause confusion/turmoil in,play havoc with,derange,turn upside-down,make a mess of,disturb,disorder,disorganize,disarrange,interfere with,upset,unsettle,convulse,interrupt,suspend,discontinue,obstruct,impede,hamper,hold up,delay,retard,slow (down)