Boring a hole from a shop to owners flat above for a cable, got my angles wrong lets just say!

Hit a water pipe inside a wall in flat, flooded shop, done electrics in due to water!! wrecked the place proper, and and done a bit of the flat mostly stairs/carpet up there and alot of a wall where pipe lived!! my apprenticship wasnt long up and was out doing jobs myself! was a disaster, worst day of my life I think to this day we couldnt shut water off so ordeal continued for 3o minutes of flowing dirty water