Motorvaps warranty

Yesterday I took my car to the RMI merchanic. It was making a sound when I turn to the right hand side. He did not jack or do anything to the car and said to me he knows motorvaps allows for one claim at a time so since this affects the steering rack he will rather claim for the whole steering rack to cover the faults that it might have. I questioned this guy, "what if the cost is less than what you are claiming for, he became cross and said I must send my car to Mercedes where I will pay more. As someone who does not understand cars I just wanted him to fix the car. Motovaps comes back saying I don't have cover for that because it is worn out and they trust the merchanic. Motorvaps used what the merchanic said to their advantage, the car was not even checked by the machanic...the guy only asked me what the problem of the car is and called me to the office. They did not ask for any pictures or print out to confirm that machenic is telling the truth. The consultant -Anro Halgrain and -Quinten Aslett and the manager were so socastic saying I will not get cover. The marchenic said maybe it is the wrack without even checking and submitted the qoutation. The car was not even checked. Motorvaps comes and says they trust the mechanic because of good reputation. I agree the merchanic workshop might have a good reputation. Does that mean everyone that works there has a good reputation. The same applies to motorvaps, the employees are bad while maybe the exercutive thinks the provide good service. The manager gave me the complaints document with pleasure, maybe the were swearing at me as I was feustrated. He did not provide any customer service and this has even led to the person who reports to him. If they are refusing to pay why don't they get the second opinion that saying they will not pay.