why pay for something we don't want??

I have a samsung S6 Edge and when I got the phone all my incoming calls were unknown even if I have the number saved. I can't seem to get to the setting to have it changed back to show all incoming calls. So the lady said that i can just have a seat and someone will be by me now. No problem with that. But them I was told that I have to pay extra every month just for a SINGLE setting which U could always set yourself?? Now I ask with tears in my eyes, why the hell do I have to pay for something that should've been right in the first place?? Not to talk about how long I had to wait for the phone when I ordered it. (Saying at the top of the screen NEXT day delivery) I had to wait 2 weeks for Vodacom to deliver the phone after I receive numerous sms's EVERYDAY stating that my phone is on its way. And having to phone \CUSTOMER CARE"only to hold the line for more than 40 min! I would just like to know what precisely am I paying for??? Bad service if so then you doing a GREAT job not serving your clients! """