Tempest robbing Clients

I hired a Hyundai H1 with Tempest fro a period of 5 days through their contact centre. When I returned the car it was in a perfect condition, no stretch no dent. While waiting for a refund for my deposit I instead received email(S) calls and sms's to contact them urgently as I owe them money.I called them and discovered that they ridiculously charged me R11 000 on mileage.The call centre agent placed me on 200 km per day.My dispute is I was not given options the agent placed me on this contract.When I collected the car at the Airport Branch no one even questioned me about this.I mean where is the customer services here?My point is the fact that I am renting a family car over a period of days does it not trigger the fact that I will be travelling ?then why put me on such contract?So this is how Tempest makes money out of their clients?I feel I was ****** and cheated.As a client give me options don't just pick for me.This is the second time that I am renting a car with them and the first time I did it through a company called Around about cars and I was placed on unlimited mileage and I was travelling to Swaziland and I certainly did not think Eastern would be different.Tempest Cape town Branch gave me a great service the last time, and even with this matter I first went to them and they emailed the Airport Manager , Carlo who did not even bother to look at the email until i was given his cellphone number and called him. He told he did not have time to look at the email, he did not even sound keen to assist me,When i advised him of what happened his response was that a contract was signed and there is nothing he can do and he does not understand why his number was given to me at the first place and that it is not part of their job to ask where the client is travelling.He advised that he will escalate the matter to his manager and come back to me, and till today i am still waiting for him , no email and not even a phone call from him and that was on the 9th April 2018.I am a very angry and unhappy client R7500 is a lot of money to just be charged on mileage and to go down the drain just like that.This is money that i worked hard for , this is my Kids money!This is day light *******!