Dad customer service

I took my car to kia makhado and explain that the is a funny sound in my car. After the service i receive the information that my car its fine and the is no problem with the car, I drove my car and still feel the same sound on the 02/06/2020 I return the car back. I was call to come and have a drive with the mechanic so that he can understand or pin point what the co**** is, i send my brother as i was working. The mechanic said its the v-belt and the pull so i have to pay an extra About R6300 then i did the payments. On the 5/06/2020 i was told that the car its fixed and i must collect my car keys at the service consultant house, only to find out that the car its not fixed and the noise has increases. (Kia Optima 2013 DM39JFGP )