Poor service from vodacom

Well after 9 months vodacom decided I need a annual increase. Does annual not mean 12 months? I only had the contact since June 2022. I took out a contract for R199 x 36 months. Lies in the advert. When I phoned in about the R16 increase I was told Vodacome gave me 100mb free due to the increase. What can you do with 100mb??when I spent over a hour on the phone I was told I would get a better deal because of the increase. I got. I got a extra R15 free minutes. Really?? Now my new installment is R235 because of it. I went from R199 annual increase of R16 after 9 months to R235 for a extra 100mb and R15 free airtime. I am totally disgusted with vodacom. I did not even get notification that I would get a annual increase after only 9 months