Customer abuse, agent behavior and incorrect data allocated

I purchased 40 G of data from the MTN app on June 26 for R299, and I was allocated 12 G of data, which will expire on July 8, 2024. I have been contacting the call center since June 26 without receiving any help, and when you call to speak with a manager, they put you on hold until you disconnect the call and inform you that there is only one supervisor on the floor or that the supervisor will call you after two hours without returning your call. I am extremely frustrated about this because those agents are not even close to being professionals and will tell you that there is nothing we can do if you want to report us to Hello Peter, we can't stop you.