Billed in US$ & not SA Rand

Good day, I was contacted by an Alex from Microsoft Windows(according to him). He informed me that my licence expired and my computer is open to hackers. He asked me to search certain programs on my computer. I saw the errors and then he showed me that the program stopping the errors was not running. I asked directly if the 249 payable was in SA Rand and he said yes. Then he said I will be continuing with Ethan. Ethan then continued with the payment and then it came up on the screen that it was US $. I asked him to stop the transaction but he continued. I was then informed that my money would be refunded within 48 hours. Now 5 days later he phones me back and tell me that I will only be refunded a certain amount because the rest is gone and the license was installed. I don't want the license because I was misinformed and ignored when I told him to stop They are arrogant and don't give you a chance to talk. I have send numerous emails but never once answered in an email they keep on phoning after I explicitly said I will no longer communicate without any proof. Apparently today's conversation was recorded in that case I would like the first call's as proof that I was misinformed.