I actually opened up a customer complaint with Halfords customer service about.......3 years ago about this exact
problem with the ready to use screenwash on my mk2 red
ibiza bonnet.....it looked a completely mess but after 3 months of chasing I gave up and went to a body
shop where I'd had some work done before and he got some polish out and his MOP and did the whole bonnet for me for free, job done lol
A tip...I saw a couple somehow get their whole bonnet resprayed after a "patch" appeared under a L plate sign, it looked like someone had taken a heat gun to the bonnet and they claimed that this was caused by the L plate. They filed a complaint and funnily enough they were told in no way could the L plate of caused that, but suddenly call from HO and this was rushed through because the couple went to a magazine or paper (cant remember which)