Complete lack of customer service and communication

I hired a car from the Port Elizabeth/Gqeberha airport and everything was going smoothly until the car was broken into. The ******* smashed the lock in on the drivers door and then stole my luggage (2 bags of clothes and 1 laptop bag with a laptop, iPad and hard drive inside) 1 hour before returning the vehicle. On returning the vehicle on the 5th of June I reported the matter and filled in an incident report. On Tuesday the 7th I got an sms that I will be charged an amount for the damages, after which I immediately emailed them asking for more information and an invoice. While at work on the 8th of June I got an sms from the bank saying I had insufficient funds for the transaction, I guessed this could only be Avis charging me for the damage. I had still not received any invoice or communication regarding the damage from them. In the morning on 9th of June I got an email with my rental agreements, the incident report and the quotes for the repairs, to which I responded and requested an invoice as I till hadn't had any other communication regarding the damaged (I am still waiting for a response) I tried calling their online helpline twice but there was no answer and also tried downloading my invoice online but it couldn't be found. On Friday the 10th of June I called the reservations line and finally got help. However, the system still did not show an invoice on my account as it seemed as though the damages were still being processed. They tried to contact the PE branch but the line dropped and I heard nothing more them. While enjoying my Saturday morning I got a notification that Avis had just charged my credit card, I tried downloading an invoice online again ,as I still hadn't received anything via email, and there was still nothing online. I called the PE branch and they said the system only showed I had been charged but couldn't detail what it was for and that I'd have to call on Monday when all departments were working. Quite frankly being charged a large amount without any communication since returning the vehicle is just unacceptable, the customer service received is appalling and not of the standard expected by a seemingly reputable brand.