Poor customer service from Mondo

My first phone call to Mondo was fantastic and I gave them excellent reviews. Since then, I changed my mind and I hope that I never have to deal with them again. They never bothered to phone me to give feedback on an investigation. I asked to speak to the manager, Vasigen Naidoo, but for two days he could not make the time to speak to an unhappy customer. In future, I will only make changes or upgrades to my contracts when I am physically in an MTN shop and never over the phone again.