Bad service from Multichoice agents

Be careful when sales agents sell you the internet service on top of your current package. After confirming the payment on the contract there were extra charges. Since the 7th July until this point in time 21 July my account is still a mess. Chatting to the online agents is a waste of time. No response from agents that called me and promises that they will investigate my account and call back. No response from the agent at the customer service centre since 8 July. No response from one agent that called and said she will discuss with her manager. When calling the customer service centre is just costing me money and sometimes I had to hold on for a long time