Refund not paid out after a month of claiming and rude agent.

I am very frustrated with Nimble agents who are rude and impolite have been waiting for my refund which was double deducted opp. Settling the account since 02.01.2025 till today 07.02.2025 I have not gotten my R3620.6 Instead I am calling them myself every week since 21 days had passed as they said they will pay me back, I have been very annoyed by Busiswa who is not into serving me at all she's not interested as she told me there's nothing she can do, she submitted all my documents for refund to the refund department but for me to be told to wait after a month again is not realistic this value R3620.6 I need my money but I am given a runaround which is really unnecessary. Nimble is just failing me. Please advise who I can contact regarding this matter.