Poor Vodacom Online

Actually No Stars For Vodacom- The Online Upgrades Department.I called *** and Really unhappy for the Fact that i wanted to Upgrade my Contract. I spoke to Calvin on the 1st Call and when i told him that i do have full authority to the Account and that Notes was made on the System that i can inquire about anything on this Account and i was told by Calvin that he can't assist me and the time when i asked him that i want to speak to a Supervisor then he drop the line. I than called in again and Spoke to Philani. Same story with Philani. When i Explained that I want to Speak to a Supervisor I was told that no one is available and they can't assist me- Philani then puts me on Hold and a Supervisor (Sipho) came to the line and speak to me but then also he couldn't assist me. I just need Vodacom to Cancel my Contract because of the Pathetic Service from Vodacom online. All i wanted to do was to inquire about my Upgrade.