Dissatisfied, unfair ,prejudiced , refusal of my money by FeDEZ eXPRESS za

I ordered something in China which was supposed to arrive in S.A on the 20th April 2020. On the 17th April 202 I received an Invoice from Nande Tiso from Fedex Express ZA which I was supposed to pay an amount of R1794-41 for the Custom Duty which I paid from my FNB account. On the 20th April when I track the parcel the status indicated that the parcel was returned before it was even shipped. I called the supplier who verified that they received the parcel back with them. I then notified Fedex Za AND REQUESTED THE REFUND. I have been sent from pillar to post since then from Nande Tiso, who sent me to Sophie Nkabelane, to Zirina Brown, Daleen Smith whom I think works for a sister company TNT with no help. Then Esmerelda Voster came to offer assistance since April but i HAVE NOT RECEIVED MY REFUND. I had made countless calls to the call Centre and was told that they are waiting for the clearing agents to create a Credit note but my money is not coming forth. I have a parcel waiting to be paid double that about with another company and I need the Refund to be able to pay for it but Fedex Express ZA is not refubnding me and I see here most customers are complaining with the same problem and all they are told is the same message which looks automated. My tracking number is : *** and I need my money. I have long sent proof of payment which I made and my banking details to all these guys; Nande Tiso, Sophie Nkhabelane, Zirina Brown, Esmerelda Voster, and Daleen Smith they all have the same communication and I want Fedex Express ZA to refund me, is that a difficult thing to do ?

This is not the right way of treating other people. It feels like you are *****ing from us. this is the same pain you will feel if ********* were to hijack your delivery guys, it is not right at all and I want my money as I have waited for a long time and need this money so that I may pay the duty before my parcel is returned. I do not need any call but for someone to email me a proof of deposit of my account or to tell me to fetch it from your office . Why does this company have so many complaints in a month , you surely do this on purpose. I will be left with no option but to come to the office and demand my money since being nice is not working.