Took it out to clean it? Hmmm that's a good one. Took it for a 'test drive' and have buggered it.
I'd expect nothing less than a full decent repair at a garage of your choice. If it's as mint as you say then you really DO need to get a decent job done or it will devalue your car, through their fault.
I'd be running round with a

if I were you.
Gutted for ya
Si