I recently traded my golf in for another with a vw dealer and the amount of hassle I had trying to contact various different sales guys was amazing! You fill in their online forms for them to contact you and you never hear from them!
One dealer I rang the sales guy says I'll get back to you with a part exchange price, four hours later rings up offers me £6000 I'd had online valuations of £7600 and £7300 (we buy any car offered £7100!!) so I tell him £6000 is no good, I'll get you a better price he says! then never returns the call.
I found a good dealer in the end, he offered finance I told him I already had a loan in place, he asked what rate I'd got (5.7%) and he left it alone after that because they were offering nowhere near that!
They all try to offer extras paint protection and warranty, (mine had the balance of manufactures warranty and I enjoy cleaning my car) just be ready and say you don't want them. Although I did get gap insurance for a £100.