Car had an intermittent fault with a light coming on. Took it to local garage who looked and advised me to take to main dealer to put their machine thing on it which would diagnose the issue.
Took to a main dealer. They quoted me £55+vat to do the diagnostics, so I left it with them as they couldn't do it right away.
Got a call a few days later saying the diagnostic thing didn't show anything as its an older model, but they are going to check a few things for me and is it took to leave it with them a little longer. I said ok thanks and they said they'd call me back.
Didn't hear anything for a while and then about 2 weeks after I got a call saying they can't find the actual problem, but said they thought it was a problem with something electrical and a very common fault with this car so they think its that. To replace will be over £1000. Car is worth about £900 at a push. So I said, no I won't get the part changed as it doesn't actually affect the running of the car, its just a bit annoying at times.
They then said they had spent 14 hours looking for the problem which their labour bill came to just over £1300! But as a 'good will gesture' they would only charge fee £400.
AIBU to say I'm not paying that, because all I asked them to do was to put it on the diagnostic thing at the price they quoted. When they called they made no mention of hourly rates to look again at it, they made it sound like as their machine didn't show anything they'd take a quick look for me. No mention of additional cost. Plus if its such a common fault, surly they'd have realised this before spending 14 hours on it? And the fact they don't actually know if that IS the fault, its like they are guessing anyway.
I have said I will not pay, as they hadn't said it would cost more than they quoted, and they have threatened not to give me my car back until I pay. Anyone know where I stand with this?