I bought a used Vauxhall Insignia two weeks ago. The sales guy told me that the car had a full service history and I paid for a two year extended warranty. Paperwork arrived for the warranty and it appears to cover next to nothing.

They have offered to refund me the cost of warranty (plus financing it) but I can't get an independent warranty without a service history. There appears to be no service history with the car. The car also had two faults.

I emailed the dealer last week to say due to their misrepresentation of the car, under the mispresentation Act, I was cancelling the contract therefore please confirm arrangements to return the car. I have heard nothing since.

Can I simply return the car to them with both keys, as I'm still within 28 days of collecting it? I have no paperwork or emails confirming that the car came with a service history. I do have an email from them saying they are in the process of tracking down the service history.