NO testing done on new apps or USSD

CellC recently upgraded both its app and self service. On both the app and self service I am unable to activate wifi calling. simple because this function is not available in either. The customer service rep did not know or bother to find out why this is not available and advised to go a cell c shop where they confirmed the same. I called customer service again and after holding on for 15 minutes while trying to find out the issue she advised that the tech team know there is an issue using *147# where wifi is supposed to be activated is missing and were working round the clock to fix this. This was 3 days ago. How can you launch something new and not test this thoroughly this also goes for the new app where one cannot even see the services you have and could activate services through the app as in the previous app. Doesn't cellc test anything before lauching. I am in the software industry myself and before launching to the public software is tested. As I am leaving for overseas Thursday I want my wifi calling activated.