I bought a used Vauxhall Astra GTC last year from a main dealer. All seemed well until I brought it home and found the service history was missing. I contacted the dealer and was told it was still in the office and would be posted out to me. Weeks went by and I never got my hands on the service history and when I contacted again I was told it was lost but that a copy could be gained from the Vauxhall database. Frequent messages continued for months and I was told multiple times that it was retrievable. Last month the dealer told me that the service history would not be retrievable as it was not carried out at a Vauxhall garage. What's more, it seems two of the car's four annual services have been missed. What are my legal rights?