CSI has the worst service

I would hereby like to express my dissatisfaction and disappointment at the bad treatment I have received from CSI Property Management. I have been a good tenant and payer, even paying upfront for my rent. On the 03 December 2021 I received a letter of demand for outstanding rent at 17:00pm. I was under the impression all along that my rent had been paid upfront until the end of January 2022 as per the figures I was given and quoted on when I moved in. Instead of them bringing this to my attention they opted to instruct debt collectors. When I contacted CSI to try and resolve this matter the person I was met with very hostile and rude treatment from (Anysha). This person has been very rude towards me. I then agreed and paid the outstanding amount and no one told me about collection fees that I also had to pay for. I only found out about these fees when I tried to load my prepaid electricity meter and it was brought to my attention that my meter was blocked and I needed to pay an amount of R750 for collection fees before my meter can be unblocked. For a person that has paid more than R43000,00 upfront why would treat a client this way? Furthermore I was charged a double deposit as I'm self employed could they not take from the deposit they have? I would not recommend anyone use them at all as a service provider....I'm moving out and will not be renewing my lease