Refund

I hired a car from Cape Town International Airport on the 29/09/2017 9:28pm and returned it on 01/10/2017 at 5am. The terms and conditions stipulate the refund will be done within 3-4 working day. Today is day 4 and still no refund. I called the customer service only to be told it was only processed today, which is day 4 and my money will be in my account in 2 day, that is 6 days in total. Why put a clause in there when it cannot be fulfilled? Europcar services is terrible and the Cape Town manager is not available till later on today so one can assist me. I was told to call back later on. Who incurs all the telephone costs? With regards to the invoice, I need to call in to get a copy of my invoice, it is never done voluntarily. This is not the first stance this has happened. I am very irate.