[scr8pdo]

You could get it repaired ie a new sill but if you go down this route, get the dealer to foot the bill, just make sure that you are 100% happy before as the dealer will probably write another reciept to say that he has paid for the work, you are happy etc and that is the end of it, if you sign it then a month later you find something else wrong you will be left stranded.

I personally would go and get your money back and go elsewhere, you can pretty much gaurantee that there is gonna be more problems with it, get out while you can and stay well clear of that dealer, he doesnt seem to have any qualms about ripping people off