If you had cancer, would you
a) go to the hospital, see a cancer specialist and then go in for treatment immediately with that specialist OR
b) go to a walk-in-centre, see a general nurse who said "well it might be this but I'm not sure" and then go home, keep ringing NHS direct who are in the know but can't actually see your body, so they tell you to go to a cancer specialist at the hospital, and then keep ignoring them and ringing NHS direct hoping for a different answer?
The people who are telling you to go to a VAG specialist with acknowledged TFSI know-how are trying to help you.