Poor quality of customer service

I am really surprised by what seems to be the rules in place in Discovery Health. I am getting married in may and I wanted to put my fiancee on my Medical aid scheme. She is currently on Discovery Medical aid but on a lower plan than I am. Essentially, we were going to pay more money to Discovery Health as a couple than what they are getting now. Either way, the only option I was given was to downgrade myself to be on the same lower plan as her. It seems like it makes business sense for Discovery when we give them less money. I could also mention the fact that I spoke to various people in the process over the past few weeks, and that nobody told me about this requirement until today. We were told to cancel her plan in order to start the process of having her join my plan as my dependant!! Only to be told now that this move is NOT possible. This is really shocking customer service, far from the standards we could expect from Discovery Medical Scheme. Maybe another Medical scheme would be happy to have me and my fiancee without making our life difficult and making it such a obstacle course to get a clear answer.