Minipulative sales tact- Mondo Telkom

I was contacted by Mondo Telkom for a new contract, I am a current customer and did not want to initially take up the offer as I still have a few months on the current contract, the consultant I spoke to was very convincing and assured me that they will take over the old contract once the new one is active and that I would not be billed the current fee as I paid an admin fee for the new 1 and will only be debited at the end of July. I was debited incorrectly this weekend. when I called the contact centre to query I was told that I now have 2 lines and that the contract was not an upgrade or they aren't taking it over as it was loaded as a 2nd contract. Don't these sales pass quality checks? this is misleading and I want a manager to call me and fix this as I was promised. I was told today that I cannot speak to a manager unless an investigation is logged. seriously? The sales person is Cia-Laugade Chetty and I want to know what happens to staff that make sales manipulatively? I want what was promised to me as I cannot be paying for 2 contracts. Tracey...