Poor customer service

We rented a car on the 17 December 2021 and there was a required deposit of R9500 2hich we paid due to some delay of funds clearing we actually wanted to take the car for 19 days I ended up asking the lady to book until the 30 December and I will call to do the extension fair enough everything was done we took the car , I called as promised to make the extension to cut the long story short we returned the car on the 4th nothing was said to us they just took the keys and said thank you , poor poor of poorest customer service from Sandton branch......now it's 14days later we have to get the refund of a deposit back I'm telling you I called the whole day on the 15th day nothing concrete was said to me , now it's the 16th day I'm phoning again I was put on hold for 30min mind you I'm using my airtime when I finally went through I spoke to Lakisha or something who told me that my refund was not activated she will activate it today and I will receive the refund in 3 working days imagine the audecity i have already been inconvenienced again I have to wait for another 3 working days . My question is is the any Manager at the Sandton branch do they even know how to spell Customet centric or they just care about money coming to them , I have rented from First car rental and the service was so wonderful then I thought I should try this one trust me I will never recommend this to anyone at all.