Undervalued

Recently upgraded my phone and received a complete wrong billing. After numerous calls to the call center, holding for more than 30 mins; trying their online chat options with an agent who provided me with another clients billing details and disconnected me all the time; visiting my nearest branch, my issue with my billing still has not been resolved. My whole experience has been really frustrating and unpleasant. How does a company like Telkom undervalue their loyal customers and treat them with so little respect!