Rude "customer service" agent, no resolution of query, just wasting time...

My wife tried to buy airtime to the value of R150 on the Vodacom app on 28 Oct 2020, Vodacom had no problem taking the funds from her credit card, but did not add the airtime on her account, so she tried again and again Vodacom took the money but did not provide the airtime. She called the Vodacom call center but because I am the account holder, they had to call me. When they called me I was busy in an important meeting, and I politely asked the agent to call me back in 10 minutes when I am finished with my meeting. She was very rude and said that she can't wait for me....AS IF SHE IS BUSY??? she kept on calling back immediately (after telling her that I will be available after 10 minutes. I eventually stopped my meeting to take the call, and again I told her that I asked her to call me back in 10 minutes, because I am busy at the moment. After which she dropped the phone in my ear, and never called back. So eventually I called the call center and explained the situation with the missing R300 airtime, I was informed that they are aware of the problem and that I should call again after 24 hours if the airtime is not loaded. I will probably waste my time again without getting anything resolved, because clearly the people working at Vodacom think that they are doing the customer a favor, instead of providing a service that I pay for...