Toyota not delivering on their end of the contract

I took out a Toyota Genuine Pre-Owned Warrany in July of 2017. Later that year (November) my car started having a problem with the fuel gauge. I took it to East Toyota Eshowe to get that checked out and repaired. I recieved the worst service from the service advisors there who really spoke badly towards me. Maybe it was becaise they saw a young child when they looked at me. They were extremely unprofessional. Toyota later declined my request to get my fuel gauge fixed and stated that they do not cover such in their contract with me even though the contract states that the fuel sensor is covered. In early 2018 i had a problem with my CV joints. I took the car to East Toyota Eshowe again and Toyota declined that too, stating that i had taken out a non-comprehensive contract with them. The strange part is that the contract clearly states that the CV joints are covered for R9500.. the contract with my name on it that was emailed to me by Toyota. Leonard Chokoe sent the contract via email to me. The worst part of this is that Toyota had the nerve to tell me that if to try to claim again for the CV joints, i would be charged R600 by East Toyota. Toyota is not keeping their end of the contract and ive been paying every month loyally since July 2017. Why is Toyota declining to fix everything stated in the contract. When i try to call they don't answer their phones. What must i do?