False advertising to rob you!!!!

i was purchasing a internet bundle on the ussd code*141*0#. whilst entering the prompts there came up a adverti*****t to buy an fortnightly bundle of 1gb for R79, use ussd code *141*2*293#, when i dailed this ussd code and follow the prompts it took me to a prompt saying confirm buying a 1gb fortnightly bundle for R89. which is R10 more than the advertised price, if they cannot correct the adverti*****t i surely will look forward on sending screenshots towards the advertising association of south africa for false adverti*****t.