Telkom call Centre agent de*****ed me

Good day I had a problem with telkom mobile, I had a contract with them, the gave me a problem of debit order, they always debit before my salary date, I ask them to change the date to suit my salary date which is the 28th the refuse, then I decided to pay the outstanding amount through eft and close the contract, I called call Centre, to ask the settlement amount and reference number they send me that information I made a payment same day and sent a proof of payment to the same email to finise the matter to my suprise I received the invoice stating that nothing has been paid into my account, I called back the call Centre to check, I found that they gave me the wrong reference number, I was ask to send the proof of payment and all my details like identity number I did, but the matter is still not resolved the money was paid on the 28th March 2025, I have sent the documents to their email but nothing is happening, I rely need help, my ID number ***, every time I call them they tell me to wait, until when?