poor service and Unnecessary handling fee

I hired a car from FCR(PTN). 2 days before I needed to return the car, I contacted FCR(PTN), and told them that i will drop off the car at the DBN branch and asked to be dropped off at work, they said yes. On arrival, they inspected the car and all was fine. I was told to wait for the driver, after a few minutes, the consultant told me that the driver will not be returning soon and that they do not offer a drop off service. They did say that they could have fetched the car from me. I requested them to come and fetch the car from my work, they arrived and found a small nail in the tyre. They said that they will take the car and have to replace the tyre. It was a tiny nail and did not need replacing, but I understand their policy, and agreed that they could replace the tyre but that I wanted the old one back as it was perfectly good, it just needed a plug. I now received my bill for the tyre, and for a R500 admin fee! As well as being told that they do not have the old tyre. I could have replaced the tyre myself, and not had any of these issues. I logged a complaint, and was told that this is in the fine print! A few simple words could have saved me time and money!