Telkom infringing on consumer protection rights

So.. last week Tuesday,went in for an upgrade,a ***** of huawei phones........I got the Samsung A70,....after using and testing the phone,I found when outside it takes foggy selfies....and that wasn't pleasing to me,I went to closest branch,where I was told they can't assist me,as it wasnt original branch ,and I asked them,what about the 7 day warranty,and customer satisfaction according to CPA...they said that act didn't including exchanging of phones...I feel this is infringing on my rights,as when you enter the telkom website,they even state,if you not happy with product,you can return or exchange within the 7 day period,I went to the original brunch,and they said same thing as well,but I should come back when manager is back. Now,I don't ever wanna deal with telkom ,the level of patronizing by staff is ridiculous......I And now I'm stuck with devise im not happy with,where is the keenness they had when assisting me get phone, now you get rudeness comments, Too much running around trying to seek help