Going up against 'The System'

I rented a car from Avis George Airport Branch just before the easter holidays... been an absolute nightmare to sort out the whole process, still not done. Car boke down, not even an apology for no actually having the car to go to where I needed to. Still had to pay full amount even though the actual service wasnt rendered. Really struggled to actually pay as well... wasnt allowed to pay at branch (tried that twice), or make an EFT, or givr the details of a credit card, not did they want to take it from the account on file, even though there was enough money in that account. Point blank refused to show me a breakdown of the costs, that really escalated. Finally after I spoke to headoffice I got an invoice, but were charged for stuff that I didnt take. No one wants to reply to my queries... latest is that it is very busy with month end. Also lodged a complaint to just get it done, but basically, the person I complained about, phoned me to resolve the query. Go figure. Disgraceful service, really awful and quite impossible to sort anything out if you encounter issues. Costs also really escalate out of your control. Much easier to deal with Telkom or the government.