High Consumption Fuel Query Ignored

I rented a 1.4L Polo Vivo from Thrifty on Friday 13 November 2015 in Stellenbosch. I returned the vehicle on Sunday 15 November 2015 at Cape Town International Airport, as I had arranged. When returning the vehicle, I refueled it (as required to by my contract) and discovered I was paying R264.00 for the petrol. At about R12/L this translates to 22L or nearly half a tank. At combined consumption this car should travel about 355km. I only traveled about 200km.<br> <br> Initially I made a site complaint to request an invoice, since this is my right as a customer, so that I could make sure of my distance traveled. I also told them that with the amount of fuel used, I suspect the tank wasn't refueled by them before I received it, or the car was defective. I received no reply.<br> <br> On 1 December 2015, I sent another request for an invoice. And this time I was (not directly addressed) copied into an email to the company's invoice department. <br> <br> I still have not received a response. <br> <br> Considering I know that I have a right to an invoice and I am sure my complaint is reasonable, this is unacceptable.