Perhaps some hybrid. AI manages the initial calls, problem solving then hands off something that requires human intervention to a small set of higher level human support staff. Changes to Number/SIM assignment could be configured to only allow the human accounts to make changes. AI could update all the petty time consuming things. Of course none of this is useful unless laws exist that could cost a mobile provider their operating license if they do not strictly monitor changes that could be related to bribes and corruption and that hiring trash for front-line support could cost them dearly. It must be obvious to anyone making changes that they are logged and reviewed probably also by AI.

A post by “Bender” says robots are less bribable than humans. Bender probably takes a bribe in every season.