Grrrr!

Took car for its free 2-month old health check which includes checking tyres and their pressures. 
When I took it in I was told the wash and vac that it included was not possible as there was nobody in to do it. 
When I went to collect my car she gave me the wrong key. I said to her it was either the wrong key or there was something missing off it (keyring with little horseshoe) and she said no there was nothing on it. I said there definitely was and she went off to look then came back without anything to say it might have dropped off. It could not have dropped off - well not both items! Off she went again and there was some toing and froing before she came back with the correct key!
Set off driving home and on the way the tyre pressure warning came on - all four tyres! All under-inflated! Give me strength. 
It doesn't exactly inspire confidence.