Telkom decided my query was not worth their time

My complaint is about a call to Telkom (7 July 2021 @ 11:15) regarding Smart Voice - Recurring bundle and the extra call charges listed on my invoice. Telkom representative was not receptive to the inquiry and forcefully informed me why the telephone calls incurred costs. Fair enough - but I wanted to understand why in past months there were no charges! In the end, the representative felt she could only answer my question by consistently reiterating her explanation as if I was a child. And in the end, she decided that I was wasting her time, so she politely cut the call and left me hanging. Is this how Telkom sorts out customer queries and speaks to their clients?