Overcharged on Bill

I received numerous calls from a call centre "representing" vodacom regarding renewal of my contract. I eventually gave in and entered into an agreement for a monthly package (no hand set) of 179.00, This was in January. I also had a data contract with them that was about to expire and I was adamant to cancel or not renew becaus the network was terrible and contntly no internet connection. Of cours they assigned a call centre Agent to try and convince me not to move. I was then offered and signed up to apackage of 349.00 p.m. For my mobile phone package and data package I am supposed to be billed 606.00 but I am now billed 752.00. Getting to speak to an Agent is a nightmare as you are constantly transferred to an AI Tobi. I have been with Vodacom for more than 30 years and am very disappointed and feel exploited. I believe it is time to explore other Service Providers. Vodacom is definitely not ideal