My partner and I bought a new Dacia recently from a major dealer and were given (not offered) 'free' paint protection. We were not told what this was. I initially thought it was an insurance product but a bit of google work tells me it's probably a thirty quid bottle of stuff that apparently protects your paint.

We called the finance company up for a settlement figure today and it turned out that we had been charged hundreds of pounds for this service but the interest had been modified so that we didn't notice. I know that it's partially my fault for believing the salesman but is there any effective way of prising our money back out of the dealer?