Useless Manager and staff

I bought my second hand car at Hyundai east rand and I took the car back for fixing as it was making a squeaky sound. They fixed it. Two months after the same problem even today. I raised the matter with the dealer they ignored me. Two weeks ago I asked for my service book. They have been ignoring me. They sent emails and when i rep**** with the date to arrange some one to pick it up they don’t attend to my email and a bunch of calls and messages I left for both Lesley and Sydney. They are just a bunch of people who doesn’t care about their clients. Actually Sydney J is worse. From the day I fetched my car. Can I get my service history book or what that I can get as to take my car to Weltevreden park rather. Useless east rand branch