'Arnold Clark!' -
Bunch of fleecing b******s!
Reckon they trawl in trade in's and ex fleet vehicle on their last legs and flog you their useless warranty to make you feel safe. Not worth the paper it's written on.
If you bought the vehicle as advertised as a Design, and it's not then you could be able to take it back and get a refund. If not then drag them to court over it. Deception is one **** of a crime to get away with. Check your V5 - should have model details. One call to Vauxhall may even give you more details about the vehicle. If it was 'downgraded' there should be some documentation suppled with the vehicle to say what has been done.
Get back to us if you find anything out.
Good luck.