Unable to get Mobile Services on Apple Watch

I’ve visited our local Vodacom dealer twice to activate OneNumber on my Apple Watch. Although the service was activated and I followed all the steps via the Apple Watch app on my iPhone, the setup consistently fails. It gets stuck on “Vodacom: Waiting” and eventually displays “Could not set up mobile service.” I’ve also contacted the Vodacom call centre, but unfortunately, they were unable to resolve the issue. I’ve tried all recommended troubleshooting steps, including unpairing and resetting the watch, but nothing has worked. The dealer has advised me to contact Apple, which I did. Apple confirmed that there is no issue with my phone or watch, but mentioned that they frequently encounter Vodacom customers experiencing the same problem. This suggests the issue is not with Apple, and I’ve found several similar cases online. Given that this appears to be a recurring issue, I would appreciate it if someone could assist me directly or refer me to someone who can.