After sales service

I bought a car in May, Mansoer was great with the selling process. I was assured that the car had a service history and sold 2 warranties with the car. The aircon has now broken, I took the car to BMW who logged a claim for me with the warranty company. They want a copty of the service history before they will pay out. The book in the car is blank. I have email webuycars but not had a response. I sent Mansoer a message on Friday 29 Dec asking for a copy of the service history. He rep**** saying he was on leave but will get it sorted for me. They either blocked me or something as my messages have not gone through for a week and I have tried calling him but the calls fail. I went into webuycars on Saturday to see if someone could help me only to be told that they cannot help me without info from Mansoer. I had all the paper work with me but they were not prepared to look or help me and told me I have to wait for Mansoer to come back from leave. I cannot believe that the only person that can check a service history is the original sales person, what if he were to be hit by a bus. Honestly the branch was very busy and I think they were more interested in new sales rather than helping an existing costumer.