Vodacom Home internet

I took up a contract for home wifi and was told there is a promotion running that ill pay R599 for the first 3 months but that never happened.

My first month i paid R756.52, second month R625.67 and now received a new statement for R699.

Why are we being sold something that is false?

I sent a email to the teamleader for the lady who sold me the contract and saw you asked someone else to investigate but its been over a week and still no response.

If i have to now cancel i will be charged again and this is so unfair