WiFi Calling Bogus Service

<p> I recently tried to activate roaming on my line which was declined because I on a prepaid line and not on a contract. I see absolutely no logic since Cell C shouldn't really have a problem as long as the customer has sufficient airtime. Anyway a loss to their business. However, on a call with the customer team I was advised to activate my Wifi Calling feature on my phone in order to receive and make calls and send SMS as per normal while traveling whenever I am in a wifi zone. The first representative I spoke to did not know how to activate it or how it worked and had speak to her supervisor, after which she still seemed unsure so I went into the website to check for the details. I still ran #147# but the commands kept returning error messages. So after running the process set out on their site I wanted to make doubly sure that I was enabled (I have an iOS phone and had the wifi written next to the bars so assumed it was) so I called Cell C again to make sure. This operative could also not confirm but then went on to insist that I needed a new green coloured SIM card that was wifi calling enabled! Because I was so desperate to be online while traveling as I needed to make some time sensitive payments. I immediately went to the cell c store in Sandton to have my sim replaced as I was traveling the same day. While I was there I repeated the same story about having the wifi written next to the bars but the attendant there told me i should see a little phone sign which I said I didn't see. He did not even bother checking my sim or activating my wifi to check if my sim was enabled and immediately went on to run a sim swap saying this was the only way I could have the service enabled. The new Sim I was given was black not green and the same as the one I had in my phone. I explained how important it was be online while traveling. Fast forward to the next day while I am abroad. My wifi calling is not working even though my phone is activated with the feature and I was unable to make the payments I needed critical to my business. i am so furious with Cell C and their staff for having absolutely no clue of their products and blindly giving advice to clients. The cost to my business and reputation is irreplaceable. I would rather be with a service provider who don't make wild claims of the newest technology when they are not even in a position to sell it to sell it to their customers</p>