Vodacom Fibre overcharging existing clients

Good day, I am an existing Vodacom Fibre client. Our contract has expired and is currently on a month to month contract. Our line speed is a 10Mbps speed, when inquiring to upgrade the line speed was advised to check online for prices which I did as well as I received an email regarding the line speed and a response with prices. For the 20Mbps speed I was advised and online showed R799.00 a month uncapped. When I call to do this all of a sudden its over R900 a month because I am existing client and this is just the price for new clients. Are you honestly telling me you overcharge existing clients for the same service this is ridiculous the consultant I spoke to was also beyond uninterested as she kept having other conversations in the middle of the call and had to keep repeating questions as she was clearly very busy with everything else. I cannot fathom you would rather do away with your existing clients in the hopes of getting new clients rather and charging them better prices while doing away with your current clients.

Please confirm so I am aware I should be taking business elsewhere and advising others I have referred to Vodacom to do the same.