Appalling Service from the so called service champions.

I have had such a terrible experience with upgrading my phone his is the worst service l have ever received from MTN who call them service champions and will brighten up your day yet they turn the day into a nightmare. I have been made to go in circles just to get an upgrade. When l thought the person called Joshua Wernberg was assisting me only to get a message saying failed appointment. I called spoke to Winnie Maluleke who could not assist too. So much for being service champions. I think MTN should not advertise services that they cannot provide efficiently.