Untrained staff. Don't care about their customers!

Second time in less than two weeks I am complaining here about useless Avis...I am currently driving one of their cars, arranged and paid for via Discovery Insure. Had to pay a refundable deposit. No problem, but, when I collected the car on 31 January 2016 they messed up the credit card transactions and took two amounts instead of one. Phoned the CEO's office to get that one sorted...Today 11 February, less than two weeks after collecting the vehicle, I get bombarded with sms's telling me I need to return the vehicle by 10:00am tomorrow Friday 12 Feb. I phoned to query and I was simply told that the repair to my car was estimated at 8 days and therefore I must now return the hire car. I DON\T HAVE MY CAR BACK FROM THE PANELBEATERS YET!!!! I do have an Avis contract that says I have until the 28th of Feb 2016 to return the hire car. My insurance also believes that I have the hire car until the end of the month. No, not Avis, and the woman I spoke to on the phone was sooo helpful I could plutz. Really Avis don't expect any personal business from this consumer, nor will I recommend you to anyone. Sort this mess out before I call your CEO, again!!"