Poor service

I app**** to add my newborn into my medical aid. This was done. However when the new card arrived I noticed that the newborn had been duplicated as a dependent and this increased my premium. I called Discovery this morning to rectify the mistake they made but I was requested to ‘hold while the issue was transferred to business unit’ or something like that. I waited until I ran out of airtime. I spent about R30 waiting on the phone. The call ended due to insufficient funds and they never bothered to call me back. Why should I suffer financial loss for the mistake you made? This is completely unacceptable. ***