FNB Private Clients no response or feedback

I rented a vehicle and paid the deposit using my cheque card and returned the vehicle on 28 September and all was in order as confirmed by the rental agency who also advised that they released the funds the day my car was returned. My first queries to the Private Clients call centre was that they can't assist and they transferred me when I was cut off. I then sent an email asking for assistance and again after three days of no one contacting me. I was then phoned back advising that on a credit card the refund would be automated but on a cheque card I need to file a dispute and the documents was sent to me on 12 Oct (the transaction is showing on my pending debits since 23 Sept) which I completed and sent back with all the proof on the same day to Ncamiso Simelane and still no feedback, not even an acknowledgement that my forms have been received. I then phoned the call centre again now to find out what is going on and the lady confirmed it's in relation to my dispute and said she was putting me through to Ncamiso, after again being on hold I was put through to the wrong department and the lady advised she was putting me through to disputes. After again being on hold I went through to some voicemail service and was cut off. This is ridiculous.