How did such a great network decline so much in such a short time?

How did such a great network decline so much in such a short time? I don't know where to start. Should I talk about the slow internet access or the terrible network when engaging in phone calls? Let me instead vent about my terrible Vodapay experience. This app is just terrible, whoever built and maintains the app is honestly doing a terrible job. You can't even use the app, it either refuses you to login or it twitches the whole time during use, enough to give you epilepsy, it's literally a hazard to epileptic individuals, I'm not even joking, it's hurts my brain to use this app. And it's bad enough that you guys forced integrated the My Vodacom app, the one app that was stable. I could go on and on about my terrible experience with Vodacom but that will take too much of my time. Please fix these issues Vodacom.

Thank you