Mango flight JE152 and Mango Kiosk

I called on Sunday 22/9/2019 @ 18:58 in desperation for assistance, I required my reference numbers to be able to do my online check in. A gentleman by the name of Molefe answered my call. He confirmed that nobody was booked on 13:10 flight with my surname. I asked if there was any additional information which could assist with the search, I provided our names, was prepared to provide ID, emails, but he was adamant that we were not booked. I know we were booked, as I had booked returned flights paid by EFT and received my invoices, it was just a case that my detail appeared on my computer which I did not have with me. I asked him his surname as I wanted to lodge a complaint about his service and attitude and he refused to give it to me. He said its Mango policy that they must not provide their surnames. He further confirmed that there was no team leader available accept another colleague, who I then asked him to put me through to. I was put on hold for a while and then Molefe comes to me and asks me all the same questions like, provide name, surname ect and then he could find all 3 of us by name on the flight. I needed to stay calm to receive my 2 references however it was time consuming, airtime and the call was ended in a ****y goodbye. Trusting that the call was recorded, and that Mango will take interest to listen to it. My next shame was that Mango never has change when you purchase from the kiosk, and then promise to bring your change later and it never happens. This is blatant *****ing from someone.