Worst service provider ever!!

It's always such a mission getting things done through Vodacom!!! I visited a store to get my banking details changed 2 weeks, I was told it would be done but since then I have received absolutely no communication!! I went to twitter on Wednesday and I was told someone would call me, till now no one has reached out to me to assist me. I managed to change banking details seamlessly with other service providers but with Vodacom everything is like climbing mount everest!!! Your IVR system is not user friendly at all. This is by far the worst service provider I have ever had to deal with!! Not to mention the attitude we get from your customer care representatives!! People who straight up tell you to "relax, they didn't cause this problem" !!