At Thrifty, service is non existent

Hi I am writing in regard to extreme unpleasant experience I had as a customer of Thrifty at ORT International Airport ground floor. Because of that experience I have had to return the car on the very same day I took delivery of it. This is how it all started. I made an online booking on Monday (25/04/2016) of a B glass vehicle for Tuesday morning but for some reasons the system crushed just as I got an sms notification payment from my bank. The system said"Thank you for payment" and it indicated black and yellow sign and wrote the the system is on upgrade/under construction, can't remember the exact word used. To my surprise there was no reference number but amount of R1232.02 was reserved for purchase at Thrifty on my card. I thought I will receive an email (which is the case with other car rental companies I have used) with reference number to confirm my booking but that did not happen. So, on Tuesday (26/04/2016) I went to the airport and I explained my case of a failed website booking. It was around 06:00 in the morning. I was told there is absolutely nothing they can help me with but there are only two options for me, the first is to wait until 08:00 (which was not an option for me) and the second option was to do manual booking (which is what I opted for). I was promised that my issue will be taken up with relevant people and I will be copied in all emails. At about 11:30, I still did not get any email or a call to say we are attending to your matter. So I made a call to inquire about the progress made but I was transferred to another line and no one picked up. I called again told the lady on the line that I am not happy with the service and she went down to the ground floor and once she was there, I was assured that I will be called and be given the details but nothing happened. I must admit my mistake of not taking the names of the people I interacted with. As I said before that I opted for manual booking, when I took delivery of the car, i was not the same glass as the one I chose online but I took delivery of the car anyway. The agreement no.: 842721. The following were the problems with the car: 1. The tank was not full despite being promised that it will be. And I came back and notified the guy who checked the car and he took the inspection sheet inside offices next to the parking bays and it was indicated and signed for. (But going back was an inconvenience me) 2. The radio was not working. I only realized when I was on the way to work. (inconvenience) 3. The e-tag was not working. I realized when I went under the gantry and there was no beep. I thought maybe it's just the sound that was not working. Then I used e-tag only lane at Gosforth. I caused unnecessary traffic and I had to reverse the car so that I can use manual lane. Only when I got to Dalpark did I realize that I have to ask for proof of payment and I have attached that proof for Dalpark to my email to Thrifty. (Another inconvenience) With the three problems plus the fact that no one called me or copied me on any email to tell me about the steps being taken to resolve my online booking problem, I decided to take the car back because I felled like I was not being taken serious as a customer. In my complain to Thrifty, I asked for refund on all my monies connected with the rental minus one day booking fees because I used it for one day although I booked the car for three days (I only received my deposit back, I did not get my booking money for the two days I did not use the car). For the failed website booking, I still did not receive that money back. I had to make other plans transport wise for the holiday because I was extremely inconvenience by Thrifty. I am deeply disappointed by the service from Thrifty. If you need more information, please feel free to contact me on my mobile which ***. What attracted me to Thrifty was the 400 km per day but I did not know that the catch was poor service.