Lying agents, *****ing company NO COVER!

I joined Oneplan Health at the end of July, I was specifically told that if I provide them with our Discovery Health certificate waiting periods will be waived. I did this then was told they need a full membership timeline, I sent that through, they mailed back with fictitious and invented dates saying we had interrupted cover so they cannot waive our waiting period. I resent clearly indicating uninterrupted cover from 2014 to November 2017. They rapidly changed their tune and said since we weren't covered for longer than 3 months they can't waive the waiting period. They have no already ****** 3 months installments form me and they just said sorry this wasn't told to you. No it wasn't in fact your sales person willfully **** to me huge difference between lying and not informing a client! I want the remainder of my waiting period waived effective immediately or OnePlan can stop *****ing my money immediately I will not fork over 6 months installments because I was willfully misinformed.