Refund due and I am not happy with their quotation

Hi, it was an easy process during online selection of the car and everything , but problem happened when I decided to extend days when I was by the Springfield office from 30June to 02 July. I firstly was assisted by a lady whom I explained everything and why I need to extend days we agreed it a better option. while I was enquiring outside checking cars. When i come back I had to be assisted by another person assuming she explained what I explained to her we proceeded with signing documents was given keys and left. Car was returned on time but had little incident I wrote a incidebt report cool. few days later damages quote was sent to me with email, I enquired how many quote did they do since I also wanted to use my insurance one because I find theirs too expensive, but no one responded.I received another bill of KM exceeded surprisingly cause I discussed it with a lady but not with a guy assuming she told him everything......it fine my fault also not double check with the guys but he also had to double check with me if it what I needed dsince he took over from the lady.it was way too much because of the selection of free KM only that gave low rate online....! I was very shocked and surprised cause that what I explain to the lady and I realised that I was ended up help by the guy not by a lady.

Now am seating with two bills, damages and KM exceeded! I kept sending emails to enquire about given quote a lady called Nomatbemba responded saying someone will contact me within24 hours but it never happened after that 24hours. I wakeup on 9th July my credit card debited damages amount!!!!! remember I had deposit still with them because of the process of damages I believe and KM bills. But ain't they suppose to comeback to me with my enquiries? Also the refund should be back as the exceeded KM was not the whole amount of the deposit paid and they promised to pay it back in 3days before the damage amount taken ? damage money was debited straight from my credit card before the refund nor any consultant calling me in regards. Can someone help I have refund due to me.