Pathetic

I bought a Samsung Galaxy6 Edge at the Samsung shop in Menlyn 5months ago case. I was told afterwards it only got a vodacom mother board. What I didnt want because Iam not Vodacom Iam Virgin Mobile. Phone the Samsung call centrum which help some what. But the phone is very slow with everything. And the only thing Samsung is doing pully up there shoulders. I want my money back oor fix the problem. Or lets see how good the comsumer board is working.