False advertising

Very dissapointed, went to the gateway branch to take out a contract for the Y6 for r179 as advertised only to be told they can give me the same phone but for r309 because my credit score is low.1stly i have no problem with my credit score. I qualify for almost every package with other service providers. 2ndly if my credit score is low. Why the hell must i pay r309 for a Y6. When asked if i qualify for anything cheaper the consultant says no. I dont understand the concept of all of that because how can i not qualify for a y5 lite for r99 yet qualify for Y6 for r309.im not sure if the consultant(andrew) **** to make extra commission or yourl are just trying to rip of people with false advertising.