Midland VW will see you right :)
Give them a call and get it booked in and they'll sort you out.
The problems you've got could be anything really so getting it up to Midland and scanned/checked over will save you a load of time (and money maybe!).
To be fair I'm happy enough with mine, it'll certainly do anyway!
Going to pop to a mates with an airline and give it a blast off. I might leave the proper clean till after winter as it'll only get filthy again when the salt starts appearing on the roads.
I've just come through an insurance fight too... as they wanted to write my A3 off after I was driven into.
You have to fight fight fight. I found making direct contact with the people doing the work helped...after initially pricing the job my car was deemed a total loss... so I...
She was coming the other way and turned across my path to go into a drive way. Low speed (25mph) and her front right corner went all the way down the drivers side of my car. Started just before the front wheel on the front bumper.
She coughed to not looking so her insurance paid out...
I'm not sure matey, I've not felt the need to enquire as for some reason my car has never had any coil issues and is the only 1.8T I've ever seen to have a dead steady idle :)
Could have been an easy solution to your mans misfire if they're covered. Worth a phone call maybe at least.