Service booking and customer service

I called3x to book for a car service, left my number for someone to call me back but no-one did. The 4th time I called I was transferred and spoke to 3 different consultants and the last lady Michelle told me that I had to pay R2500 for my first car service as regardless me having a service plan. I explained to the lady that I have called them 3times before and in-between that period I had an assault case I was a victim off and had to rush off and move to a child and women centre. During that time I was going through medical assessments and counselling. Michelle was not interested in what I had to say and then at the end agreed to pay the amount so as to have my car serviced. I was then put on hold for 12mins before the phone was dropped. I called Renault south Africa and was on hold for over 10mins and my call or complaint was never attended. I am very very unhappy and as my 2nd car, I again bought me a Toyota, as they have the best service and a great care.