Worst Customer Service & assistance by far!

I am a frequent flyer using my mango app. So the 25th Nov I booked me a flight as I needed to be in JHB the Tuesday for an important meeting where there was a company who wanted to fund and assist my business. When I booked my flight, it went off my account but then I realized I didnt receive any notification. I called Mango and they told me it would automatically reverse within 48 hours. Its 3 weeks later today and still nothing. Anyway because it was a Sunday I thought maybe it was a bank issue, I called the bank as well and they said it was pending but it is out of my account. (I have all my calls & emails of communication on hand).The next day I call Mango again because now my money can wait, I just need to get to Jhb because this is a once in a lifetime opportunity, they check the flight and respond to me that there are no passengers by my name. Fine. I then go again onto the Mango app and book another ticket from a different acc(I loan money from someone as I needed to get to Jhb) , again the money went off the gentlemans account and the ticket wasnt booked so automatically I called Mango again and again the same response was given. I explained to them the money went off and I needed to be in JHB because of this important meeting I had the Tuesday. They said they cant find me on the passengers list. I have been sending emails, calling them trying to find out what happened to my money and the booking because if I booked 2 different flights from 2 different cards perhaps there was a technical issue, i asked them no responses. I told then I want assistance from a manager because this is not fair, its 3 week since i booked the money is gone, I know its Festive so people are up to ***** which could have been the case and when I called they its the bank and again as per my last mail they told me its the bank. Now, I have been using this app the past 2 years and i have never experienced this where my flight booking dont go through. I asked them to check the technical side, after complaining and dealing with 10 different people i receiced 1 email with an apology but not even a follow up. The people I was suppose to meet up for the funding and assitance has not responded to me as I missed a once in a lifetime opportunity where I didnt pitch. I am so disgusted because after sending numerous emails not once did they even call or follow up and as a top airline that was the worst Customer service ever. I would like to show correspondence, via email, screenshots of the money going out of both mine nd the gentlemans acc, recorded phone calls. I am still stuck in Jhb because unlike some people I am not fortunate enough to just book another ticket home because I am still waiting on those funds to be returned. I missed a once in a life time opportunity over a flight that I probably wont get back and that I just cant get over and all they kept doing is blaming the bank but how can it be both Standard Bank & ABSA from 2 different peoples accounts but the same problem. Robyn London **********