Adding a service to an existing Vodacom account

Since December 2020 I try to add an additional service to our existing business account with Vodacom. All the documents were submitted and I was assured on several occasions that they have everything. Until today (1 April 2021), after spending many hours on the phone with Vodacom (when they actually answer their phone), this was still not done. While writing this I am actually wondering why I am still trying. Perhaps I should just move our whole business account to another service provider..