selling s**** car

Bought a car at mazda Randburg in November last year 2020 . worst decision ever, the has travelled less than 5000KM but it is starting to give me problems , first it was battery now it is knock on the suspension. when i take the car for checks at the people that works with suspension i was told that one shock is finish and is affecting the suspension. Mind you in November when i was going to pick up the car i was told that the car went for a shock change because it failed dekra test. i am not sure which shock was changed because the shock was never changed