This was last March / April time.
The wheels are the same conditionthey were then.
I doubt the dealer will have any record of the enquiry though as I didn't even get a proper invoice for the work that they did do just a letter (after pestering) detailing the work done.
Oh and when the car came back from the dealers - they had it for a couple of weeks waiting for rear dampers - the engine mgmt light they were supposed to have sorted came back and then when I got it back the second time the front arch had been scuffed! I noticed that on forecourt and kicked off after which they agreed to pay for the remedial work.
Seat should have a ote of your enquiry with them when they told you it is upto service manager etc.
Ring them back, advise you are not happy and wish to take the matter further, suely they have a set proceedure and guide lines for these things. In view of them nw being outside warrenty but th fault was initiaky reported within the warrenty period they should inspect (free of charge) and let you have the report. If they do not agree to this, advise them you ill get your own report from an independant assessor (search assessors on yell.com).
When ou get the report saying the wheels are corroded and it appears to pre-exist the expiry of the warrenty ad appears to be due to poor quality etc. send it to seat, giving them 14 days to pay or issue.
Cost to issue about £50 for £1500 worth of alloys, well worth it IMHO