Poor customer service

Hired a car on may31st for 1day rakesh said must come in early to pick the car and they would only charge me for one day. Car was delivered at 0r tambo all was ok . I even phoned the next day and was told won't be charge extra 8 days later they debit me 500 extra. Now I must go and find documents so frustrating. Customer service is extremely poor. Lots of customers are complaining about the same issues. Marketing and doing things **********ly.