Bad services and really ****ed off

I bought a month ticket from Park to sandton in March but my circumstances changed so I requested a refund for the monthly ticket. I filled in the refund form at Rhodesfield on the 14/04/2018 and submitted all the docs till day I have not received my money back. I spoke to several agents on the call centre number innocent nkule and to the manager gavin that promise to phone me back and never bothered to call. They have escaled several times to the finance department and no one is giving them any answers also spoke to a lady at Rhodesfield a manager Tumi and she assured me that she will follow up on my refund and never came back to me