Check the oil and water please...!

My mobility has been somewhat hampered over the past 2 days, and probably will be for another 2 days. Thats because my car is currently sitting in the workshop, waiting for a new water container.
It all started on Friday afternoon, on the way home from work. Rush hour traffic through the detours in Rosebank and I notice that there is steam rising from the left side of my bonnet. Thinking that I've probably run out of water, I quickly maneuver my way into a side road and turn the engine off. I wait about 45 minutes for the engine to cool down before taking the water cap off. The bottle is empty, so I figure that I caught it just in time. Luckily I have a 1.5l bottle of water in my boot - I quickly pour that into the bottle. Not enough, so I find a tap, fill the bottle, and continue to top up the level in the container. Still not enough, I go back another 3 times. Eventually the level reaches the top, and I figure that its all sorted.
I make my way home slowly, watching the gauge to make sure the temperature doesn't rocket - all looks good. I promise myself that I'll check my water more often.
Anyway, wake up on Saturday morning and figure I'll go and have the oil checked, tyre pressure checked, and give the car a good clean. When I ask the guy to check the water and oil, he starts filling up the water container once again, pours and pours and pours until its full. I then check under the car, and its leaking out all over the garage floor. Problem.
So I take the car straight to Audi, about 1 km up the road, and then do a pressure test. Sure enough, there's a leak. They remove the bottle only to find that it is quite badly cracked underneath - probably as a result of the heat, and the fact that it has seen over 100k km's in mileage now.
Long story short, they need to order a new water bottle which will take a day or two, and once received, is a 5 minute job to replace. I just hope that the damage has been limited to the water bottle, and that everything else is ok. Also means that I am car-less at the moment - so between K and I, we'll have to make a plan to get to work in the morning.