Driving along the duel carriageway 3 days ago and big bleep and warning light: DPF issues

Called main dealers and they advise to drive the car for 20 mins on duel carriage way for 20 mins ( mind you I had been driving on the motor and duel carriage way for about 40mins when it came on) 2 days passed and still dpf bleeping. Called main dealers booked car in for tomorrow could take 48 hours to resolve and no courtesy car. Called VW assist they advised that they would send a technician to me at work and then they will be able to supply me with a courtesy car and bill main dealers

Technician came youngish lad, very eager to just get on with it, so he collects the keys from reception. Comes back 5 mins later saying in order for me to resolve the dpf issue you need half a tank of diesel ( I had just under quarter) could I take the car to petrol station advised not possible as in work, he asked for about £25 so he could go get fuel, told him not possible as I would need to give you my card and pin. He told me that I must be doing short journeys, I told him I have had the car since XMAS EVE and I have already done 1400 miles!!!!!!
He then told me that you need at least half a tank of fuel and drive the car for half hour at EXACTLY 2000 revs, told him this was news to me about half tank 200 revs and over the last 2 days I must of done 100 miles to try and resolve the dpf issue and surely that is a workshop job on the runners. He told me he had plugged his diagnostic machine in and their was nothing wrong with the car

then got on to the phone to vw assist and spoke to the lovely lady that told me she would arrange a courtesy car, the technician wanted to speak to the lady and started shouting at her that why are we giving this man a car their nothing wrong with his car I have ran the diagnostics. He then put the phone done and got on his mobile phone to his manager outside the office thinking I could not hear him. He told his manager I was being funny and not cooperating (amongst other unsavory things). So I approached him and told him I could hear every word....he went red and I asked him where you sent to sort my car out or sort me out...no end of apology but I told him to leave the office, kept on apologizing but I was not interested and told him again to leave.

Ten Mins later got a call for VW assist wanted to supply me with a courtesy car for tomorrow.
Left work a couple of hours later, drove 2 miles and it lit up like a Christmas tree:

Engine management light on
Glow plug light flashing
Stop/start error displayed
DPF warning
Airbag light on
And side sensors going berserk ( red warning light when their nothing next to the car)
THE TECHNICIAN!!!!